verb (used with object), as·sim·i·lat·ed, as·sim·i·lat·ing.
verb (used without object), as·sim·i·lat·ed, as·sim·i·lat·ing.
Origin of assimilate
Word Origin for assimilate
early 15c., from Latin assimilatus "feigned, pretended, fictitious," past participle of assimilare "to make like," from ad- "to" (see ad-) + simulare "make similar," from similis "like, resembling" (see similar). Originally transitive (with to); intransitive use first recorded 1837. Related: Assimilated; assimilating.