ante-

American Heritage® Dictionary of the English Language, Fourth Edition

1. Prior to; earlier: antenatal.
2. In front of; before: anteroom.

Wiktionary

1. non-productive Prior to in time.
2. non-productive In front of in space.

GNU Webster's 1913

1. A Latin preposition and prefix; akin to Gr. 'anti`, Skr. anti, Goth. and-, anda- (only in comp.), AS. and-, ond-, (only in comp.: cf. answer, along), G. ant-, ent- (in comp.). The Latin ante is generally used in the sense of before, in regard to position, order, or time, and the Gr. 'anti` in that of opposite, or in the place of.