Assemble
Middle English: from Old French asembler, based on Latin ad- ‘to’ + simul ‘together’.
wiktionary
From Middle English assemblen, from Old French assembler(“to assemble”), from Medieval Latin assimulāre(“to bring together”). Doublet of assimilate.
etymonline
assemble (v.)
early 14c., transitive ("collect into one place") and intransitive ("meet or come together"), from Old French assembler "come together, join, unite; gather" (11c.), from Latin assimulare "to make like, liken, compare; copy, imitate; feign, pretend," later "to gather together," from assimilated form of ad "to" (see ad-) + simulare "to make like," from stem of similis "like, resembling, of the same kind" (see similar). In Middle English and in Old French it also was a euphemism for "to couple sexually." Meaning "to put parts together" in manufacturing is from 1852. Related: Assembled; assembling. Assemble together is redundant.
