the young of a viviparous animal, esp. of a mammal, in the early stages of development within the womb, in humans up to the end of the second month. Compare fetus .

Botany . the rudimentary plant usually contained in the seed.

any multicellular animal in a developmental stage preceding birth or hatching.

the beginning or rudimentary stage of anything

He charged that the party policy was socialism in embryo.

embryonic.

noun

incipient , organism , nucleus , eggnotes:a human embryo is the earliest stage of development while a fetus is from the eighth week of development to birth , bud , kernel , seed , spark , egg , fetus , germ