embryo

1. In the reproductive cycle, the stage after the fertilization of the egg that precedes the development into a fetus.
2. An organism in the earlier stages of development before it emerges from the egg, or before metamorphosis.
3. In a viviparous animal, the young animal's earliest stages in the mother's body.
4. In a human, usually the cell growth of the child within the mother's body, through the end of the seventh week of pregnancy.
5. A rudimentary plant contained in the seed.
6. The beginning; the first stage of anything. (figuratively)

Plural embryos