"before birth," 1798; see ante- "before" + natal "pertaining to birth." Ante-nati was an old term for (in Scotland) those born before the accession of James I to the English throne, also used in U.S. in reference to those born in the colonies before the Declaration of Independence.
antenatal care
antedate
antediluvian
antelope
ante-mortal
antemundane
antenatal
antenna
antennae
antennas
antenuptial
ante-partum