fe·tus   (f t s) n. pl. fe·tus·es. 1. The unborn young of a viviparous vertebrate having a basic structural resemblance to the adult animal. 2. In humans, the unborn young from ...

fetus n. , pl. -tuses . The unborn young of a viviparous vertebrate having a basic structural resemblance to the adult animal

Alternative Names Return to top. Zygote; Blastocyst; Embryo; Fetus. Information Return to top. When sperm is deposited in the vagina, it travels through the cervix ...

Fetus, term applied to an animal embryo after a definite period has elapsed following conception. In human reproduction, for example, the period is...

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fetus /fe·tus/ (fet´us) [L.] the developing young in the uterus, specifically the unborn offspring in the postembryonic period, in humans from nine weeks after fertilization ...