OSAC Lexicon
The OSAC Lexicon is a compendium of forensic science terms and definitions. This terminology tool was created to help bring consistency and understanding to the way terms are used by the various forensic science. Use of the OSAC Lexicon does not replace the need to reference the original published source.
The terms and definitions in the OSAC Lexicon come from the published literature, including documentary standards and technical reports. It is continually updated with the latest work from OSAC units, as well as terms from newly published documentary standards and standards elevated to the OSAC Registry.
Gradually terms are evaluated and harmonized by the OSAC to a single term. This process results in an OSAC Preferred Term. An OSAC Preferred Term is a term, along with its definition, that has undergone review and evaluation by the FSSB Terminology Task Group and has been approved by the FSSB. The FSSB recommends that subcommittees use OSAC Preferred Terms when drafting standards.
The OSAC Lexicon should be the primary resource for terminology and used when drafting and editing forensic science standards and other OSAC work products.
A European Union-funded project designed to develop an operational commonality ofidentification data between INTERPOL member countries in the event of a disaster.See http://www.interpol.int/contentinterpol/search?SearchText=FASTID&x=0&y=0
a long chain alkyl group characterized by a terminal carboxyl group COOH.
The Federal Bureau of Investigation of the United States Department of Justice.
Federal Bureau of Investigation
The FD-249 is an Arrest and Institution Fingerprint card (white card with red ink) usedfor criminal submissions to the FBI and certain other law enforcement organizations.See http://www.fbi.gov/about-us/cjis/forms/description-fd249
The FD-258 is the Applicant Fingerprint Card (white card with blue ink) used forsubmission to the FBI and certain other law enforcement organizations as part of abackground check. See http://www.fbi.gov/about-us/cjis/forms/description-fd258
A behavioral response involving the autonomic nervous system (e.g., fight or flight) in the presence of real or imagined danger involving avoidance and, or withdrawal under circumstances where the canine is distressed.
A behavioral response involving the autonomic nervous system (e.g., fight or flight) in the presence of actual or perceived danger involving avoidance, withdrawal or engagement via agonistic behavior.
Wear pattern where tire tread ribs are worn lower/smoother on one side and higher/sharper on the other side.
In facial identification and image analysis,an observable class or individual characteristic.
In facial identification and image analysis, an observable class or individual characteristic
Facial identification
The fabric portion of some pressure sensitive adhesive tapes; also referred to as scrim
The fabric portion of some pressure sensitive adhesive tapes; also referred to as scrim
In video analysis, a set of odd or even scan lines comprising one half of an interlaced video frame.
In video analysis, a set of odd or even scan lines comprising one half of an interlaced video frame
The limited disassembly of a firearm, generally without the use of tools, and usually into its subassemblies.
Testing the operating condition of a firearm without ammunition.
The subconscious impulse of a canine to merely measure physical prowess with an opponent.
The innate impulse of a canine to merely measure physical prowess with an opponent.
in textiles, a continuous fiber of extremely long length.
In textiles, a continuous fiber of extremely long length
In computer forensics, a collection of information logically grouped into a single object and referenced by an identifier, such as a filename.
In computer forensics, a collection of information logically grouped into a single object and referenced by an identifier, such as a filename
Original file system used with Microsoft and IBM-compatible operating systems still in common use
In computer forensics, a standard structure by which data is organized in a file for a specific purpose.
In computer forensics, a standard structure by which data is organized in a file for a specific purpose
In computer forensics, the data within a file that contains identifying information about the file and possibly metadata with information about the file contents.
In computer forensics, the data within a file that contains identifying information about the file and possibly metadata with information about the file contents
In computer forensics, the data between the logical end of a file and the end of the last storage unit for that file.
In computer forensics, the data between the logical end of a file and the end of the last storage unit for that file
In computer forensics, an identifier used to uniquely identify a file object within a directory object in a filesystem.
In computer forensics, an identifier used to uniquely identify a file object within a directory object in a filesystem
In computer forensics, a specified method for naming, storing, organizing, and accessing files on logical volumes.
In computer forensics, a specified method for naming, storing, organizing, and accessing files on logical volumes
See weft yarns (filling).
An inorganic material that is added to a tape to modify a physical property or reduce cost
An inorganic material that is added to a tape to modify a physical property or reduce cost
Last beam-restricting orifice in an electron optical column
A behavior that a canine has been trained to exhibit in the presence of a target odor/scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, jump, etc.). Also known as a trained final response. (See alert, indication.)
A behavior that a canine has been trained to exhibit in the presence of a target odor/scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, etc.). Also known as a trained final response. NOTE For EDC, EDC w/PSC, and PSC refer to 4.2.1.3.
A behavior that a canine has been trained to exhibit in the presence of a target odor/scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, etc.). Also known as a trained final response.
A behavior that a canine has been trained to exhibit in the presence of a target scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, jump, etc.). Also known as a trained final response. (See 3.4 alert.)
A behavior that a canine has been trained to exhibit in the presence of a target scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, jump, etc.). Also known as a trained final response. (See 3.4 alert.)
A behavior that a canine has been trained to exhibit in the presence of a target scent source. This behavior may be either passive (sit, stare, down, point, etc.) or active (bite, bark, scratch, jump, etc.). Also known as a trained final response. (See 3.4 alert.)
An image or impression of the friction ridges of all or any part of a finger or thumb.
The time in minutes, determined under specific laboratory conditions, at which the stud or joist in contact with the exposed protective membrane in a protected combustible assembly reaches an average temperature rise of 121C (250F) or an individual temperature rise of 163C (325F) as measured behind the protective membrane nearest the fire on the plane of the wood.
A manufactured product ready for use.
A manufactured product ready for use
a rapid oxidation process, which is a chemical reaction resulting in the evolution of light and heat in varying intensities (see combustion).