individual

1) any entity that may serve as an element of a set — even a set as an element qualifies, cf. Languages of Science; 2) a semantic feature of the pre-extensional level used to relate the entity to a set, ¶2-3-5; i. is empirically determined and thus cuts across many semantic classes; i. may participate indirectly in the expression of a reference and thus intensionally classifies both common noun phrases and proper nouns