1713, Latin, literally "in the uterus," from ablative of uterus (see uterus).
Entries linking to in utero
uterus n.
"female organ of gestation, womb," late 14c., from Latin uterus "womb, belly" (plural uteri), from PIE root *udero- "abdomen, womb, stomach" (source also of Sanskrit udaram "belly," Greek hystera "womb," Lithuanian vėderas "sausage, intestines, stomach, lower abdomen," Old Church Slavonic vedro "bucket, barrel," Russian vedro).