In the reproductive cycle, the stage after the fertilization of the egg that precedes the development into a fetus.

embryo. / The earliest stage of something.

plural of embryo

An embryo resulting from the sperm of one species fertilising the egg of another.

The cotyledon of a coconut eaten as food.

The megagametophyte in a flowering plant.

A fertilized human egg, up to 14 days old, that can develop into an embryo; especially one to be implanted by IVF.

plural of embryo transfer

plural of embryo sac

(medicine) The practice of placing an embryo or embryos into the uterus of a female with the intent of establishing a pregnancy.