ante-

1.
a prefix meaning “before,” used in the formation of compound words:
anteroom; antebellum; antedate.
Origin
< Latin, prefixal form of preposition and adv. ante (see ancient); akin to Greek antí, Old English and- against, toward, opposite. See answer, and, anti-
Can be confused
ante, ante-, anti-, auntie.
British Dictionary definitions for ante-

ante-

prefix
1.
before in time or position; previous to; in front of: antedate, antechamber
Word Origin
from Latin
Word Origin and History for ante-

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- in Medicine

ante- pref.

  1. Prior to; earlier: antenatal.

  2. In front of; before: antebrachium.