transform v.

word-forming element meaning "across, beyond, through, on the other side of, to go beyond," from Latin trans (prep.) "across, over, beyond," perhaps originally present participle of a verb *trare-, meaning "to cross," from PIE *tra-, variant of root *tere- (2) "cross over, pass through, overcome." In chemical use indicating "a compound in which two characteristic groups are situated on opposite sides of an axis of a molecule" [Flood].

c. 1300, formen, fourmen, "create, give life to, give shape or structure to; make, build, construct, devise," from Old French fourmer "formulate, express; draft, create, shape, mold" (12c.) and directly from Latin formare "to shape, fashion, build," also figurative, from forma "form, contour, figure, shape" (see form (n.)). From late 14c. as "go to make up, be a constituent part of;" intransitive sense "take form, come into form" is from 1722. Related: Formed; forming.