胚胎学
Embryology \Em`bry*ol"o*gy\, n. [Gr. 'e`mbryon an embryo + -logy: cf. F. embryologie.] (Biol.) The science which relates to the formation and development of the embryo in animals and plants; a study of the gradual development of the ovum until it reaches the adult stage.
embryology n : the branch of biology that studies the formation and early development of living organisms