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Gestation

(Science: obstetrics) The period of development of the young in viviparous animals, from the time of fertilization of the ovum until birth.

Origin: L. Gestatio, from gestare = to bear The state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus.The period during which an embryo develops (about 266 days in humans).The development of an embryo in the uterus of a mammal.