Deploy
late 18th century: from French déployer, from Latin displicare and late Latin deplicare ‘unfold or explain’, from dis-, de- ‘un-’ + plicare ‘to fold’. Compare with display.
wiktionary
Borrowed from French déployer(“to unroll, unfold”), from Old French desploiier, itself from des- + ploiier, or possibly from Late Latin displicāre(“to unfold, display”), from Latin dis-(“apart”) + plicare(“to fold”). Doublet of display.
etymonline
deploy (v.)
1786 as a military word, "extend (troops) in a line, expand (a unit which had been formed in columns)," from French déployer "unroll, unfold," from Old French desploiier "unfold," from Latin displicare "unfold, scatter," from dis- (see dis-) + plicare "to fold" (from PIE root *plek- "to plait"). "In its AFr. form regularly adopted in ME as desplay" [OED]. Figurative use by 1829. Intransitive sense from 1796. Related: Deployed; deploying.
