interweave v.

word-forming element used freely in English, "between, among, during," from Latin inter (prep., adv.) "among, between, betwixt, in the midst of" (also used extensively as a prefix), from PIE *enter "between, among" (source also of Sanskrit antar, Old Persian antar "among, between," Greek entera (plural) "intestines," Old Irish eter, Old Welsh ithr "among, between," Gothic undar, Old English under "under"), a comparative of root *en "in."

A living prefix in English from 15c. and used with Germanic as well as Latinate words. Spelled entre- in French; most words borrowed into English in that form were re-spelled 16c. to conform with Latin except entertain, enterprise. In Latin, spelling shifted to intel- before -l-, hence intelligence, etc.

Old English wefan "to weave, form by interlacing yarn," figuratively "devise, contrive, arrange" (class V strong verb; past tense wæf, past participle wefen), from Proto-Germanic *weban (source also of Old Norse vefa, Middle Low German, Middle Dutch, Dutch weven, Old High German weban, German weben "to weave"), from PIE root *(h)uebh- "to weave;" also "to move quickly" (source also of Sanskrit ubhnati "he laces together," Persian baftan "to weave," Greek hyphē, hyphos "web," Old English webb "web").

The form of the past tense altered in Middle English from wave to wove. Extended sense of "combine into a whole" is from late 14c.; meaning "go by twisting and turning" is from 1640s. Related: Wove; woven; weaving.

1640s, past participle of interweave (q.v.).