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.
Volatile chemicals emitted from a substance that are able to be perceived by olfaction.
Environmental conditions/factors/influences affecting the movement of odor. (See odor plume.)
Dispersion of odor in a given environment. (See odor dispersion.)
Demonstration of the canine's olfactory ability to alert to a target odor(s).
A test of the canine's olfactory ability to alert to target odor(s) in a controlled environment.
A test of the canine's olfactory ability to alert to target odor(s) in a controlled environment.
The chemical profile of an odor produced by a substance.
Area of concentrated target odor/scent.
A test of the canine's ability to alert to target odor(s)/scent(s) in a controlled environment.
Molecules that are properties of the external world objectively defined in terms of their physical and chemical characteristics and capable of being transposed by particular nervous systems into odors.
Any work or interactions with the canine where the canine is not attached to a lead.
Any work or interactions with the canine where the canine is not attached to a lead.
Behaviors indicating that the dog will attack unless the stimulus eliciting the behavior withdraws (typically characterized by rigid, forward and upward body language and threatening postures intended to make the dog look larger).
The distance from the wheel's centerline to the wheel's mounting surface. Offset is measured as positive or negative
The SI unit of electrical impedance or, in the direct current case, electrical resistance.
Of, relating to, or connected with the sense of smell.
Of, relating to, or connected with the sense of smell.
Any work or interactions with the canine where the canine is attached to a lead.
Any work or interactions with the canine where the canine is attached to a lead.
Procedures performed to verify that the technology or technical procedure is working as expected.
A designated search area for the purpose of conducting canine team exercises.
The manufacturing process for the outsoles in which the polyurethane (PU) is poured directly into the mold cavity. Single unit soles are made by pouring the PU into the mold and allowing the outsole to harden. Direct attached soles can be made utilizing this process. (See direct attach.)
Layered model that describes the way computers communicate on a network
Utilizing a canine in a boat to locate the odor of human decomposition in a body of water.
When used in training, operant conditioning involves teaching an animal to perform a response in order to obtain a reward or avoid displeasure.
A specific set of programs that run on a computer or other digital device and provides a software platform for the device to function and on which other programs can run.
A specific set of programs that run on a computer or other digital device and provides a software platform for the device to function and on which other programs can run
System software that manages computer hardware and software resources and provides common services for computer programs.
Training conducted beyond the initial training of a discipline and designed to maintain a high level of competence or skill by ensuring the canine team's capability to perform desired tasks.
A test conducted (single- or double-blind) in an operational environment in which the canine team will be deployed or utilized.
A test conducted (single- or double-blind) in an operational environment in which the canine team will be deployed or utilized.
A test conducted (single- or double-blind) in an operational environment in which the canine team will be deployed or utilized.
A test conducted (single- or double-blind) in an operational environment in which the canine team will be deployed or utilized.
A test conducted (single- or double-blind) in an operational environment in which the canine team will be deployed or utilized.
A test conducted (single- or double-blind) in an operational environment in which the canine team will be deployed or utilized.
A process that attests to the successful completion of an examination of relevant skills for the canine team to be deployed on operations.
A person's years of training and experience related to mission specific objectives.
A test of the canine's olfactory ability to alert to target odor(s) in a controlled manner that the odor is readily available, but still visibly concealed from the canine and handler. Commonly, the baggage/parcels assessment is utilized for an operational odor recognition assessment.
Training conducted beyond the initial training of a discipline, designed to maintain a high level of competence or skill by ensuring the canine team's capability to perform desired tasks.
Training conducted beyond the initial training of a discipline, designed to maintain a high level of competence or skill by ensuring the team's capability to perform desired tasks.
Training conducted beyond the initial training of a discipline, designed to maintain a high level of competence or skill by ensuring the team's capability to perform desired tasks.
Training conducted beyond the initial training of a discipline and designed to maintain a high level of competence or skill by ensuring the canine team's capability to perform desired tasks.
See mission requirements.
See deployment.
View, judgment, belief - takes into consideration other information in addition to observations, data, calculations, and interpretations.
Height of the surface at position (x, y).
Organization responsible for recovering organs from donors.
A method of isolating DNA from cells involving phenol and other organic chemicals.
the location of the applied sample or the starting point for the chromatographic development of the applied sample.
The general location where a fire or explosion began. (See Point of Origin, or Area of Origin.)