Etymograph

English

exclusive or

exclusive + or.

A compound of exclusive + or

Proto-Indo-European *(s)kleh₂w- ‘key, hook’

…

Latin claudō ‘to close’

Latin exclūdō ‘to shut out’

Latin exclūsus ‘shut out’

Latin exclūsīvus

English exclusive

Old English āhwæþer

Old English āþor ‘either’

Middle English other

Middle English or

English or

Today it means

noun Exclusive disjunction: the use of or to indicate that of two predicates, one is true and one is false (without specifying which is which); contrasted with inclusive or, which does not imply that one must be false.

Language periods are conventional ranges, not dates for this word.

Etymograph / exclusive or

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