early 15c., from Middle French permanent (14c.) or directly from Latin permanentem (nominative permanens) "remaining," present participle of permanere "endure, hold out, continue, stay to the end," from per "through" (from PIE root *per- (1) "forward," hence "through") + manere "stay" (from PIE root *men- (3) "to remain"). As a noun meaning "permanent wave," by 1909. Of clothing, permanent press attested from 1964.
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