individual (adj)
Sens 1 : a) existing as a separate indivisible entity; numerically one, single.
b) single, as distinct from others of the same kind; particular, special. [source : OED]
individual (nom)
Sens 1 : a particular being or thing as distinguished from a class, species, or
collection: as a single human being as contrasted with a social group or institution, a single
organism as distinguished from a group. [source : MW]
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Sens 2 : a particular person. [source : MW]
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Sens 3 : an indivisible entity. [source : MW]