WordReference Random House Unabridged Dictionary of American English © 2025
con•cep•tus
(kən sep′təs),USA pronunciation n., pl. -tus•es.
- Medicinethe embryo and associated membranes of humans and other highly developed animals.
- Neo-Latin; Latin: the action of conceiving, hence, something that is conceived, fetus, embryo, equivalent. to concep- (variant stem of concipere to conceive; see concept) + -tus suffix of verb, verbal action
- 1935–40
'conceptus' also found in these entries (note: many are not synonyms or translations):