ISO 22745-2:2010(E)

4 Terms relating to concepts

4.1
concept

unit of thought constituted by a unique set of necessary characteristics

4.2
intension

set of characteristics which makes up the concept

[ISO 1087-1:2000, definition 3.2.9]

4.3
extension

totality of objects to which a concept corresponds

[ISO 1087-1:2000, definition 3.2.8]

4.4
signifier

physical form (such as a sound, printed word or image) of a lingustic sign as distinct from its meaning


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