1838 (n.), 1846 (v.), American English poker slang, apparently from Latin ante "before," from PIE *anti "facing opposite, near, in front of, before" (cf. Sanskrit antah "end, border, boundary," Hittite hanti "opposite," Greek anta, anten "opposite," anti "over against, opposite, before;" Old Lithuanian anta "on to;" Gothic anda "along;" Old English and- "against;" German ent- "along, against"), from root *ant- "front, forehead."
word-forming element meaning "before, in front of; previous, existing beforehand; introductory to," from Latin ante (prep. and adv.) "before, in front of, opposite," used in combinations, from PIE *anti "facing opposite, near, in front of, before" (see ante).
ante- pref.
Prior to; earlier: antenatal.
In front of; before: antebrachium.