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Dictionary.com Unabridged (v 1.1) - Cite This Source
post-
a prefix, meaning “behind,” “after,” “later,” “subsequent to,” “posterior to,” occurring originally in loanwords from Latin (postscript), but now used freely in the formation of compound words (post-Elizabethan; postfix; postgraduate; postorbital).
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[Origin: < L, comb. form repr. post (adv. and prep.)]
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.