Longman Dictionary of Contemporary English homepage

Language: Old French
Origin: Latin prae-, from prae 'in front of, before'

pre-

 prefix
     
pre-
1 before someone or something [↪ ante-]:
prewar (=before a war)
2 in preparation:
a prearranged signal
Preset the video.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
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