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The following table contains the definition of terms used within this document. Please refer to the SNOMED Glossary for additional definitions.

Term

Definition

Gloss
tCompositional Grammar

The set of rules that govern the way in which SNOMED CT expressions are represented as a plain text string.

Gloss
tConcept Model

A set of rules that determines the permitted sets of relationships between particular types of concepts.

Gloss
tDomain

The set of concepts which may be refined using a given attribute.

Footnote Macro

Please note that this definition differs from the OWL 2 rdfs:domain axiom, which asserts that "the subjects of such property statements must belong to the class extension of the indicated class description".


Gloss
tExpression

A structured combination of one or more concept identifiers used to express a clinical idea.

Expression Constraint

 

A computable rule that can be used to define a bounded set of clinical meanings.

Machine Readable Concept Model (MRCM)

 

A representation of the rules that comprise the SNOMED CT Concept Model in a form that can be processed by computer software and applied to validate content.

Gloss
tPostcoordinated Expression

A representation of a clinical meaning using a combination of two or more concept identifiers.

Gloss
tPrecoordinated Expression

A representation of a clinical meaning using a single concept identifier.

Gloss
tRange

The set of concepts that are allowed as the value of an attribute.

Footnote Macro

Please note that this definition differs from the OWL 2 rdfs:range axiom, which asserts that "the values of this property must belong to the class extension of the class description or to data values in the specified data range.".


Gloss
tReference Set

A SNOMED CT file structure consisting of a set of references to SNOMED CT components.

Substrate

 

The SNOMED CT content over which an expression constraint is evaluated or a query is executed.

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