Police & Investigation Terminology Glossary (A–Z) | Spanish-English
Academy Field Operations
Police & Investigation Terminology
A Professional Gift to the Interpreting Community from Samuel Arcelay
The Narrative of the Street: Before a case ever reaches the polished wood tables of a courtroom, it begins on the street. It begins with a 911 call, a traffic stop, or the execution of a search warrant.
The Cognitive Framework: The Staircase of Encounters
Police work is governed by the Fourth Amendment. Visualize interactions as a staircase:
Step 1: Consensual Encounter (Free to leave)
Step 2: Investigative Detention (Reasonable Suspicion / Terry Stop)
Step 3: The Arrest (Probable Cause / Booking)
Police work is governed by the Fourth Amendment. Visualize interactions as a staircase:
Step 1: Consensual Encounter (Free to leave)
Step 2: Investigative Detention (Reasonable Suspicion / Terry Stop)
Step 3: The Arrest (Probable Cause / Booking)
Register Shifting: Officers speak a unique dialect—a mix of rigid bureaucratic codes ("subject initiated flight") and raw street slang. Your challenge is to accurately reflect the tone of the speaker without "cleaning up" the reality of the confrontation.
A
Accident ReconstructionReconstrucción de accidentes
Definition: Scientific analysis of a traffic collision to determine cause, speed, and impact angles.
Affidavit (Police)Declaración jurada policial
Definition: Sworn written statement by an officer establishing facts for warrants.
Air UnitUnidad aérea / apoyo aéreo
Definition: Police helicopters or planes used for surveillance and pursuits.
AliasAlias / nombre falso
Definition: Alternate identity used by a suspect to avoid detection.
Amber AlertAlerta Amber
Definition: Emergency broadcast system used when a child is abducted.
Analyst (Crime)Analista criminal
Definition: Specialist who interprets crime data to identify patterns.
Anonymous TipPista anónima / denuncia anónima
Definition: Information provided without identifying the source.
ApprehensionAprehensión / captura
Definition: Detaining or arresting a suspect.
Armed and DangerousArmado y peligroso
Definition: Descriptor indicating suspect is armed and poses high threat.
ArrestArresto
Definition: Taking a person into custody by legal authority.
Arrest ReportInforme de arresto
Definition: Official police document detailing circumstances, evidence, and statements.
Arrest WarrantOrden de arresto
Definition: A court order authorizing the arrest of a specific person.
Arson InvestigationInvestigación de incendio provocado
Definition: Specialized inquiry into intentional fires and accelerants.
Automated License Plate Reader (ALPR)Lector automático de matrículas (ALPR)
Definition: Technology that scans and records vehicle plates in real time.
B
Background CheckVerificación de antecedentes
Definition: Review of criminal, commercial, and financial records.
Bail Enforcement AgentAgente de cumplimiento de fianzas
Definition: Individual (bounty hunter) authorized to locate fugitives.
BallisticsBalística
Definition: Study of firearms and projectiles to match bullets to weapons.
Battering RamAriete / mazo de derribo
Definition: Heavy tool used to force entry during warrant service.
Beat PatrolPatrulla de sector
Definition: Officer assigned to a specific neighborhood for routine patrol.
Blood Spatter AnalysisAnálisis de salpicaduras de sangre
Definition: Examination of blood patterns to reconstruct violent events.
Body Camera FootageGrabación de cámara corporal
Definition: Video recorded by officer-worn cameras documenting encounters.
BOLO (Be On the Lookout)Alerta policial / BOLO
Definition: Broadcast to law enforcement describing suspects or vehicles.
BookingFicha policial / proceso de fichaje
Definition: Administrative intake process after arrest.
Break-In (Burglary)Allanamiento / irrupción
Definition: Forced or unauthorized entry into a structure.
Buccal Swab (DNA)Hisopo bucal
Definition: DNA sample collected from inside a subject’s cheek.
Bullet TrajectoryTrayectoria de bala
Definition: Path a projectile travels; used for reconstruction.
C
Cadaver DogPerro de rastreo de cadáveres
Definition: Trained K9 detecting human decomposition scent.
Call for ServiceLlamado de servicio
Definition: Request for police action initiated by citizen or dispatch.
CanvasEncuesta vecinal / sondeo
Definition: Door-to-door inquiry to find witnesses or evidence.
Cell-Site Location (CSLI)Información de localización de torre celular
Definition: Phone location data obtained from towers; requires warrant.
Chain of CustodyCadena de custodia
Definition: Documentation showing continuous handling of evidence.
CID (Investigations)División de Investigaciones Criminales (CID)
Definition: Unit focused on major crimes like homicide and fraud.
Cold CaseCaso frío / caso sin resolver
Definition: Open investigation paused due to lack of leads.
Composite SketchRetrato hablado
Definition: Drawing of suspect based on witness descriptions.
Confidential Informant (CI)Informante confidencial (IC)
Definition: Person providing info in exchange for money or leniency.
Consent SearchRegistro por consentimiento
Definition: Search conducted with voluntary permission.
Controlled DeliveryEntrega controlada
Definition: Operation allowing contraband pass-through to identify recipient.
Crime LabLaboratorio criminalístico
Definition: Facility where forensic scientists analyze evidence.
Crime MappingMapeo delictivo
Definition: Use of geographic systems to visualize trends.
Crime SceneEscena del crimen
Definition: Location where offense was committed.
Criminal ProfilingPerfilación criminal
Definition: Behavioral analysis to identify offender traits.
Custodial InterrogationInterrogatorio bajo custodia
Definition: Questioning of suspect while in police custody.
D
Dashcam FootageGrabación de cámara del tablero (dashcam)
Definition: Video recorded from police vehicle dashboard.
De-escalationDesescalamiento / reducción de tensión
Definition: Techniques used to reduce aggression and avoid use-of-force.
DetentionDetención / retención temporal
Definition: Brief holding based on reasonable suspicion (Terry stop).
DetectiveDetective / investigador
Definition: Plainclothes officer specializing in investigations.
DispatchDespacho / central de comunicaciones
Definition: Center that receives emergency calls and directs units.
DNA AnalysisAnálisis de ADN
Definition: Forensic testing linking suspects to evidence.
Domestic DisturbanceLlamado por disturbio doméstico
Definition: Police response to disputes in a household.
Drone SurveillanceVigilancia con dron
Definition: Use of unmanned aerial vehicles for intelligence gathering.
E
Electronic SurveillanceOrden de vigilancia electrónica
Definition: Court authorization to intercept data like texts/GPS.
EntrapmentInducción indebida
Definition: Defense claiming police induced the commission of a crime.
Evidence LockerCasillero de evidencias
Definition: Secure storage for evidence before trial.
Excessive ForceFuerza excesiva
Definition: Use of more force than reasonably necessary.
Exigent CircumstancesCircunstancias eximentes / urgentes
Definition: Emergency situations allowing warrantless entry.
Extradition RequestSolicitud de extradición
Definition: Request to return suspect for prosecution.
Eyewitness IdentificationIdentificación por testigo presencial
Definition: Process where witness identifies suspect from memory.
F
Field Interview (FI)Entrevista en el campo / tarjeta FI
Definition: Brief questioning and documentation of persons on patrol.
Field Sobriety Test (FST)Prueba de sobriedad en el campo
Definition: physical roadside tests to evaluate impairment.
Fingerprint LiftingLevantamiento de huellas dactilares
Definition: Technique to collect latent prints from surfaces.
Forced EntryEntrada forzada
Definition: Use of tools or force to enter building for warrants.
Forensic EntomologyEntomología forense
Definition: Study of insects to estimate time of death.
Forensic PathologyPatología forense
Definition: Medical determination of cause/manner of death.
FriskCacheo
Definition: Pat-down of outer clothing to check for weapons.
Fugitive Task ForceFuerza de tarea de fugitivos
Definition: Multi-agency team assigned to locate wanted persons.
G
Gang UnitUnidad de pandillas
Definition: Specialist group investigating gang-related activity.
GPS Tracking WarrantOrden judicial para rastreo GPS
Definition: Court authorization permitting GPS device monitoring.
Grab and Go TheftRobo rápido / robo de arrebato
Definition: Suspect takes merchandise quickly and flees.
Grappling / ControlTécnicas de control físico / inmovilización
Definition: Tactics used to restrain resisting suspects.
Grid SearchBúsqueda en cuadrícula
Definition: Systematic pattern to locate evidence in defined area.
Gunshot Residue (GSR)Prueba de residuos de disparo (GSR)
Definition: Test for particles expelled from fired weapons.
H
Handcuffing ProcedureProcedimiento de esposamiento
Definition: Standard method of securing detainee's hands.
Hazmat UnitUnidad de materiales peligrosos
Definition: Team trained to handle chemical/explosive hazards.
Heat SignatureFirma térmica
Definition: Thermal trace detected by heat-based surveillance.
High-Risk Stop (Felony)Detención de alto riesgo / detención por delito grave
Definition: Traffic stop where dangerous suspects are anticipated.
Hit ConfirmationConfirmación de acierto / confirmación de orden
Definition: Verification that database record is active.
Homicide DetectiveDetective de homicidios
Definition: Investigator specializing in criminal deaths.
Hot PursuitPersecución continua / persecución en caliente
Definition: Immediate chase of fleeing suspect justifying entry.
Hunch (Officer)Corazonada / presentimiento del oficial
Definition: Suspicion not supported by articulable facts.
I
IAB (Internal Affairs)Oficina de Asuntos Internos
Definition: Division investigating misconduct by officers.
ICAC (Child Internet Crimes)Delitos de Internet contra menores (ICAC)
Definition: Task force combating child exploitation online.
ImpoundConfiscar / llevar al depósito
Definition: Seizure and storage of vehicle for legal reasons.
Incident ReportInforme de incidente
Definition: Primary record for any police activity.
Informant ReliabilityConfiabilidad del informante
Definition: Assessment of whether tip info is credible.
Intelligence BulletinBoletín de inteligencia
Definition: Report summarizing threats and crime trends.
Interrogation RoomSala de interrogatorios
Definition: Controlled environment for questioning suspects.
Inventory SearchRegistro de inventario
Definition: Non-investigative search of impounded vehicle.
Investigative Detention (Terry)Detención investigativa / parada tipo Terry
Definition: Brief holding based on suspicion, allowing frisk.
J
Jailhouse InformantInformante de prisión / informante carcelario
Definition: Inmate who claims another confessed to a crime.
JTAG ExtractionExtracción JTAG (forense)
Definition: Digital technique to retrieve data from damaged devices.
Jurisdiction (Police)Jurisdicción policial
Definition: Geographic or legal area in which officers have authority.
Juvenile UnitUnidad de menores
Definition: Division investigating crimes involving minors.
K
K-9 UnitUnidad K-9
Definition: Handlers and trained dogs for narcotics or tracking.
Kill Zone / Fatal FunnelZona de peligro / embudo fatal
Definition: Area where officers face high danger when entering narrow spaces.
Knock-and-Announce RuleRegla de tocar y anunciar
Definition: Requirement to identify before residence entry.
Known Offender DatabaseBase de datos de infractores conocidos
Definition: Index of suspects with past arrests or gang ties.
L
Laceration AnalysisAnálisis de laceraciones (forense)
Definition: Exam of wounds to find weapon type or force.
Lateral Vascular Neck Restraint (LVNR)Técnica de restricción cervical lateral
Definition: Control hold restricting blood flow (highly regulated).
Law Enforcement Database (NCIC)Base de datos policial / NCIC
Definition: Nationwide system for stolen property and warrants.
License Plate Reader HitAcierto de lector de matrículas
Definition: Notification ALPR detected wanted vehicle.
Line-of-Duty InjuryLesión en el cumplimiento del deber
Definition: Injury sustained while performing official duties.
Locard’s Exchange PrinciplePrincipio de intercambio de Locard
Definition: Theory that contact always leaves trace evidence.
LockdownCierre total / confinamiento
Definition: Restriction of movement during emergencies.
Log Entry (Police)Entrada en el registro policial
Definition: Documentation of calls and actions during shift.
M
Major Crimes UnitUnidad de delitos mayores
Definition: Division investigating homicides and serious felonies.
Manslaughter InvestigationInvestigación de homicidio culposo
Definition: Inquiry into killings resulting from negligence.
Master Patrol OfficerOficial maestro de patrulla
Definition: Senior patrol officer with advanced training.
Medical Examiner (ME)Médico forense
Definition: Doctor who determines cause and manner of death.
Miranda WaiverRenuncia a los derechos Miranda
Definition: voluntary surrender of Miranda rights for questioning.
Mobile Command CenterCentro de mando móvil
Definition: Vehicle equipped to coordinate large scale ops.
Mobile Forensic ExtractionExtracción forense móvil
Definition: Recovery of data from phones and tablets.
Modus Operandi (MO)Modo de operar / modus operandi
Definition: Characteristic method a criminal uses.
Mugshot DatabaseBase de datos de fotografías de arresto
Definition: Archive of booking photos used for ID.
N
Narcotics Drop BoxCasillero de entrega de narcóticos (evidencia)
Definition: Secure box where seized drugs are deposited.
Narcotics Task ForceFuerza de tarea de narcóticos
Definition: Multi-agency group targeting trafficking.
NIBIN (Ballistics)NIBIN / Base nacional de balística
Definition: FBI system linking shell casings and firearms.
Night Watch / PatrolPatrulla nocturna
Definition: Police activity occurring during night hours.
No-Knock WarrantOrden de registro sin anuncio
Definition: Warrant allowing entry without knocking first.
Notes (Officer Field)Notas de campo del oficial
Definition: Handwritten documentation of observations.
Notification of RightsNotificación de derechos
Definition: Formal explanation of legal rights (Miranda).
O
Officer-Involved Shooting (OIS)Tiroteo involucrando a un oficial
Definition: Incident where officer discharges firearm at person.
On-Scene CommanderComandante en la escena
Definition: Highest-ranking officer directing actions at scene.
Open Carry ComplaintQueja por portación abierta
Definition: Call regarding person openly carrying firearm.
Open-Source Intelligence (OSINT)Inteligencia de fuentes abiertas
Definition: Info collected from public digital sources.
Outcry WitnessTestigo de revelación inicial
Definition: Person who first receives disclosure of abuse.
Overtime DetailServicio extraordinario / turno extra
Definition: Extra assignment beyond normal hours.
Overwatch PositionPunto de observación / cobertura superior
Definition: Elevated position providing surveillance/cover.
P
Pat-Down Search (Frisk)Cacheo / registro superficial
Definition: Limited search for weapons based on suspicion.
Patrol SupervisorSupervisor de patrulla
Definition: Sergeant responsible for shift supervision.
Perimeter ControlControl del perímetro
Definition: Establishing boundaries around a scene.
Photo LineupRueda fotográfica
Definition: ID procedure presenting photos to witness.
Plain View DoctrineDoctrina de vista simple
Definition: Seizure allowed for evidence seen in plain sight.
Police DispatcherDespachador de policía
Definition: Operator receiving emergency calls and directing units.
Probable CauseCausa probable
Definition: Reasonable basis to believe crime was committed.
Probable Cause AffidavitDeclaración jurada de causa probable
Definition: Sworn document supporting arrest or search.
Protective SweepInspección protectora
Definition: Quick search of premises for dangerous persons.
Pursuit Intervention (PIT)Técnica PIT / maniobra de intervención
Definition: Tactical maneuver stopping fleeing vehicles.
Q
Query Hit (Database)Acierto de consulta (base de datos)
Definition: Match returned from police info systems.
Questioning Under DuressInterrogatorio bajo coacción
Definition: Statements obtained through improper pressure.
Quick Response Team (QRT)Equipo de respuesta rápida
Definition: Unit deployed to immediate threats/emergencies.
Quid Pro Quo (Investigative)Quid pro quo / intercambio indebido
Definition: Exchange of favors used as bribery evidence.
R
Radio TrafficTráfico radial / comunicaciones por radio
Definition: Communications between officers and dispatch.
Ransom Recovery UnitUnidad de recuperación de secuestros / rescates
Definition: Team focused on kidnapping and ransom cases.
Rapid DNA TestingPrueba rápida de ADN
Definition: On-site DNA processing for quick suspect ID.
ReconstructionReconstrucción de accidente o escena
Definition: Scientific analysis determine how events occurred.
Red Flag LawAplicación de la ley de alerta roja
Definition: Seizure of firearms from persons deemed dangerous.
Report NarrativeNarrativa del informe
Definition: Detailed written account of observations.
Ride-Along ProgramPrograma de acompañamiento policial
Definition: Community participation in observing patrol ops.
Risk AssessmentEvaluación de riesgo / evaluación de amenaza
Definition: Analysis of potential harm posed by suspect.
S
Search GridCuadrícula de búsqueda
Definition: Structured pattern used to locate evidence.
Sequential LineupRueda de reconocimiento secuencial
Definition: Viewing suspects one at a time to reduce error.
Sex Crimes UnitUnidad de delitos sexuales
Definition: Team specializing in assault and abuse cases.
ShotSpotterSistema detector de disparos
Definition: Sensor network that identifies gunfire location.
Silent AlarmAlarma silenciosa
Definition: Security alarm alerting police without sound.
Sketch ArtistArtista forense
Definition: professional creating sketches based on witness.
Sniper OverwatchPunto de tirador de cobertura
Definition: Tactical position providing protection and observation.
StakeoutVigilancia / plantón
Definition: Continuous surveillance of location or person.
Standard Field Sobriety (SFSTs)Pruebas estandarizadas de sobriedad en el campo
Definition: Three validated tests assessing impairment.
Stolen Property ReportInforme de propiedad robada
Definition: Documentation of items taken during crime.
Surveillance LogRegistro de vigilancia
Definition: Detailed written account of observations.
SuspectSospechoso
Definition: A person thought to be guilty before charges.
SWATSWAT / Armas y Tácticas Especiales
Definition: Elite team for high-risk entries and rescues.
T
Tactical Breach / Forced EntryApertura táctica / entrada forzada
Definition: Method to break through barriers during warrants.
Tactical RetreatRetirada táctica
Definition: Planned disengagement to reduce danger.
Targeted EnforcementAplicación selectiva
Definition: Concentrated police activity based on data.
Taser DeploymentDespliegue de Taser
Definition: Use of electrical weapon to gain compliance.
Thermal ImagingCámara de imagen térmica
Definition: Device detecting heat signatures for locating persons.
Threat Level AssessmentEvaluación del nivel de amenaza
Definition: Classification of suspect danger.
Traffic Collision Report (TCR)Informe de colisión de tráfico
Definition: Official report documenting accident details.
U
Undercover OfficerOficial encubierto
Definition: Officer in disguise to infiltrate criminal groups.
Unmarked UnitVehículo sin identificación policial
Definition: Plain vehicle used for covert operations.
Unsecured SceneEscena no asegurada
Definition: Area where safety/integrity not yet established.
Urgent Locate (UL)Localización urgente
Definition: High-priority attempt to find missing person.
Use-of-Force ContinuumContinuo de uso de fuerza
Definition: Policy outlining escalation and de-escalation.
V
Vehicle CanvasBúsqueda de vehículos
Definition: door-to-door check for cars with evidence.
Vehicle Immobilization (Spikes)Dispositivo de inmovilización vehicular
Definition: Tool used to deflate fleeing vehicle tires.
Victim Locator UnitUnidad de localización de víctimas
Definition: Team finding missing or endangered persons.
Video ForensicsForense de video
Definition: Analysis and enhancement of body cam/CCTV.
Violent Felon Task ForceFuerza de tarea de delincuentes violentos
Definition: Multi-agency team targeting violent offenders.
W
Warrant CheckVerificación de órdenes de arresto
Definition: Query of databases during traffic stops.
Warrant Service TeamEquipo de cumplimiento de órdenes
Definition: Unit specializing in serving high-risk warrants.
Weapons ClearanceVerificación de arma libre / despeje
Definition: Procedure ensuring a firearm is unloaded.
Wiretap AuthorizationAutorización de intervención telefónica
Definition: Judicial approval for electronic interception.
WitnessTestigo
Definition: Person who has knowledge relevant to investigation.
Witness CanvassBúsqueda de testigos
Definition: Area-based search for potential witnesses.
X
X-Ray ForensicsRadiografía forense
Definition: Imaging reveal concealed weapons or drugs.
Xylazine Field TestPrueba de campo para xilazina
Definition: Chemical test for xylazine in street drugs.
Y
Youth Intervention ProgramPrograma de intervención juvenil
Definition: Early services for at-risk youth.
Youth Referral FormFormulario de remisión juvenil
Definition: Documentation used when diverting minor to services.
Z
Zeroing In (Target Acquisition)Ajuste de mira / fijación de objetivo
Definition: Focusing tactical observation on a suspect.
Zone DeploymentEstrategia de despliegue por zonas
Definition: Allocation of officers based on crime density.
Zone OfficerOficial de zona
Definition: Officer assigned to a designated sector.
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