title of an opera by Verdi, Italian, literally "the woman led astray," from traviata literally "to lead beyond the way," from tra- "across, beyond" (from Latin trans; see trans-) + via "way" (see via).
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].
1779, from Latin via "by way of," ablative form of via "way, road, path, highway, channel, course" (from PIE root *wegh- "to go, move, transport in a vehicle," which is also the source of English way (n.)).
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Harper, D. (n.d.). Etymology of traviata, la. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/traviata, la