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| blastomere |
any of the first cells produced when a fertilized ovum divides. |
| corpus luteum |
a ductless gland which forms within the ovary, resulting from the reorganization of a follicle upon release of its ovum. [1/2 definitions] |
| ectopic pregnancy |
a pregnancy in which a fertilized ovum begins developing outside the uterus, as in a fallopian tube. |
| egg1 |
a reproductive cell within the female; ovum. [2/4 definitions] |
| embryo |
in vertebrates, the fertilized egg, and in humans, the fertilized ovum in the first trimester. (Cf. fetus.) [1/3 definitions] |
| heterogamete |
either of a pair of uniting gametes, such as an ovum or a sperm, that differs from its mate in size, structure, activity, sex, or the like. (Cf. isogamete.) |
| in vitro fertilization |
a laboratory technique by which a previously extracted ovum, usu. human, is fertilized by previously extracted sperm, producing an embryo that is then implanted in a uterus for gestation. |
| mole6 |
a tumor or mass in the uterus, resulting from an ovum that degenerates or does not develop normally. |
| oo- |
ovum; egg. |
| ova |
pl. of ovum. |
| ovi- |
egg; ovum. |
| ovule |
in animals, an undeveloped ovum. [1/2 definitions] |
| trophoblast |
an outer layer of cells by which the fertilized ovum attaches to the uterine wall, and through which the embryo receives nourishment. |
| uterus |
the muscular organ of a female mammal in which the fertilized ovum is held and develops before birth; womb. [1/2 definitions] |
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