Versus
来自Big Physics
late Middle English: from a medieval Latin use of Latin versus ‘towards’.
wiktionary
From Middle English versus, borrowed from Latin versus(“facing”), past participle of vertere(“to turn, change, overthrow, destroy”).
etymonline
versus (prep.)
mid-15c., in legal case names, denoting action of one party against another, from Latin versus "turned toward or against," past participle of vertere "to turn," from PIE *wert- "to turn, wind," from root *wer- (2) "to turn, bend."