APEX

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See also: apex, Apex, and ápex

English[edit]

Etymology 1[edit]

Alternative forms[edit]

Noun[edit]

APEX

  1. (aviation) Acronym of advance purchase excursion (an air fare)

Etymology 2[edit]

Proper noun[edit]

APEX

  1. (British, trade union) Acronym of Association of Professional, Executive, Clerical and Computer Staff.