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.
In facial identification, a rank ordered list generated from a facial recognition search.
Particle(s) classified by the instrument software based on detection of appropriate (as specified in Practice E1588) constituent elements as potential pGSR.
particles classified by the instrument software based on detection of appropriate (as specified in Practice E1588) constituent elements as potential pGSR.
A dog, Canis familiaris, more commonly used to denote a working dog and sometimes abbreviated as K-9.
A dog, Canis familiaris, more commonly used to denote a working dog and sometimes abbreviated as K-9.
A dog, Canis familiaris, more commonly used to denote a working dog and sometimes abbreviated as K-9.
A person who has successfully completed a recognized course of canine handling in a specific discipline and maintains those abilities through field applications, maintenance training, certification, recertification and agency or program required continuing canine education.
A person who has successfully completed a recognized course of canine handling in a specific discipline and maintains those abilities through: field applications; maintenance training; certification; recertification; and department, agency, or organization required continuing canine education.
A person who has successfully completed a recognized course of canine handling in a specific discipline and maintains those abilities through field applications, maintenance training, certification, recertification and department, agency or organization required continuing canine education.
A person who has successfully completed a recognized course of canine handling in a specific discipline and maintains those abilities through field applications, maintenance training, certification, recertification and agency or program required continuing canine education.
A person who has successfully completed a recognized course of canine handling in a specific discipline and maintains those abilities through field applications, maintenance training, certification, recertification and agency or program required continuing canine education.
A person who has successfully completed a recognized course of canine handling in a specific discipline and maintains those abilities through field applications, maintenance training, certification, recertification and agency or program required continuing canine education.
Any action or cue by the handler that causes the canine team to perform incorrectly.
Any action or cue by the handler that causes the canine team to perform incorrectly.
Any action or cue by the handler that causes the canine team to perform incorrectly.
Any action or cue by the handler that causes the canine team to perform incorrectly.
Any action or cue by the handler that causes the canine team to perform incorrectly.
An individual with relevant training and experience to assess trained or minimally trained dogs based on standards specified in a contract/statement of work for purchase, while showing no bias or partiality. Experience in canine behavior observation, canine behavioral measurement, and knowledge of procurement requirements should be demonstrated by a person working in this role.
The dog's situational appropriate comfort and interaction with other dogs.
The dog's situational appropriate comfort level and interaction with people.
A human and working canine that train and work together as an operational unit.
The documentation of an evaluation conducted during training.
The documentation of an evaluation conducted during training.
A person providing training/instruction who has demonstrated, through education, training and operational experience, extensive skill and knowledge in the subject field or discipline. This person would normally perform the maintenance training and proficiency training in the field and may train canines in preparation for a formal course of instruction. (See instructor.)
A person providing training/instruction who has demonstrated, through education, training and operational experience, extensive skill and knowledge in the subject field or discipline. This person would normally perform the maintenance training and proficiency training in the field and may train canines in preparation for a formal course of instruction.
A canine-handler team is a human and working dog who train and work together as an operational unit. [SC1, 2011]
The amount of finished product that could be produced, either in one batch or over a defined period of time, and given a set list of variables.
An electrophoretic technique for separating DNA molecules by their relative size based on their differential migration through a capillary tube filled with a liquid polymer.
An electrophoretic technique for separating DNA molecules by their relative size based on their differential migration through a capillary tube filled with a liquid polymer.
An electrophoretic technique for separating DNA molecules by their relative size based on their differential migration through a capillary tube filled with a liquid polymer
(1) the process of recording data such as an image, video sequence, or audio stream; (2) in facial identification, the process of collecting a biometric sample from an individual via a sensor.
A piece of computer hard- ware that accepts an analog or digital signal and outputs the signal as digital data.
Device used in the recording of data.
The portion of the tire that includes the liner, plies, belts, and beads which forms the foundation for the tread and sidewall.
The appearance of unintended analyte signal in samples after the analysis of a positive sample
In computer forensics, to extract a portion of data for the purpose of analysis.
A type of file (electronic or hard copy) in which all documentation and case relevant information is kept and maintained.
Data exhibiting features that are representative of a plausible range of casework conditions for mixtures and single-source samples. These features include masked/shared alleles and stutter, degradation (including different degradation levels for different contributors to a mixture), allele and locus drop-out, and PCR inhibition
Samples from known individuals with known testing results prepared within the laboratory to simulate a range of samples typically encountered by the testing laboratory in casework. The use of a range of test samples in validation studies facilitates the development of protocols for casework.
A method of preserving and recovering an impression utilizing an appropriate casting material.
A method of preserving and recovering an impression utilizing an appropriate casting material.
A bloodstain pattern resulting from blood drops released from an object due to its motion.
(1) A description of the canine's movement as the canine searches for and/or follows the concentration of target odor/scent. (2) A directional command to the canine.
Dental stone, snow print powder, sulfur, or other suitable materials specifically used to accurately recover three-dimensional impressions. Some casting materials are also successful for lifting twodimensional impressions.
Dental stone, snow print powder, sulfur, or other suitable materials specifically used to accuratelyrecover three-dimensional impressions. Some casting materials are also successful for lifting twodimensional impressions.
Dental stone, snow print plaster, sulfur, or other suitable materials specifically used to accuratelyrecover three-dimensional impressions. Some casting materials are also successful for lifting twodimensional impressions.
the transitional phase of the hair follicle between the active growth phase (anagen) and the resting phase (telogen) in the hair growth cycle.
The transitional phase of the hair follicle between the active growth phase (anagen) and the resting phase (telogen) in the hair growth cycle.
A substance whose presence initiates or changes the rate of a chemical reaction, but does not itself enter into the reaction.