08afeb41_Model___UNECE_Statistics_Wikis__Object
[Group] Concepts [Definition] A Concept whose role is to extensionally define and measure a characteristic. [Explanatory Text] Categories for the Concept of sex include: Male, Female Note: An extensional definition is a description of a Concept by enumerating all of its sub ordinate Concepts under one criterion or sub division. For example - the Noble Gases (in the periodic table) is extensionally defined by the set of elements including Helium, Neon, Argon, Krypton, Xenon, Radon. (ISO 1087-1) [Synonyms] class [Object] 
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Annex C Glossary - Generic Statistical Information Model - UNECE Statistics Wikis