embryo

play
noun em·bryo \ˈem-brē-ˌō\

Definition of embryo

plural

embryos

  1. 1 a archaic :  a vertebrate at any stage of development prior to birth or hatching b :  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

  2. 2 :  the young sporophyte of a seed plant usually comprising a rudimentary plant with plumule, radicle, and cotyledons

  3. 3 a :  something as yet undeveloped b :  a beginning or undeveloped state of something <productions seen in embryo during their out-of-town tryout period — Henry Hewes>

Origin and Etymology of embryo

Medieval Latin embryon-, embryo, from Greek embryon, from en- + bryein to swell; akin to Greek bryon catkin


First Known Use: 1548

Other Embryology Terms



EMBRYO Defined for English Language Learners

embryo

play
noun em·bryo \ˈem-brē-ˌō\

Definition of embryo for English Language Learners

  • : a human or animal in the early stages of development before it is born, hatched, etc.


EMBRYO Defined for Kids

embryo

play
noun em·bryo \ˈem-brē-ˌō\

Definition of embryo for Students

plural

embryos

  1. 1 :  an unborn human or animal in the earliest stages of growth when its basic structures are being formed

  2. 2 :  a tiny young plant inside a seed


Medical Dictionary

embryo

play
noun em·bryo \ˈem-brē-ˌō\

Medical Definition of embryo

plural

embryos

  1. 1archaic :  a vertebrate at any stage of development prior to birth or hatching

  2. 2:  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—compare fetus



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