embryos Definition

an animal in the early stages of growth and differentiation that are characterized by cleavage, the laying down of fundamental tissues, and the formation of primitive organs and organ systems; especially : the developing human individual from the time of implantation to the end of the eighth week after conception

a vertebrate at any stage of development prior to birth or hatching

the young sporophyte of a seed plant usually comprising a rudimentary plant with plumule, radicle, and cotyledons