Definition of embryo
1a archaic : a vertebrate at any stage of development prior to birth or hatchingb : 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 : the young sporophyte of a seed plant usually comprising a rudimentary plant with plumule, radicle, and cotyledons
3a : something as yet undevelopedb : a beginning or undeveloped state of something productions seen in embryo during their out-of-town tryout period — Henry Hewes
Recent Examples of embryo from the Web
This second medication, which is also used to induce labor, helps expel the detached embryo.
There are classics from the past that give us the Trump phenomenon in embryo, foreshadowings of American authoritarianism with a huckster’s grin:
Since then, doctors have improved techniques for creating stronger embryos in the lab, helping lead to recommendations that only one embryo at a time be transferred into the mother in many cases.
When women have an ectopic pregnancy, they and their doctors are faced with a choice – to allow the pregnancy to continue (both the mother and the embryo will die) or to terminate the pregnancy (to save the mother’s life).
In previous years, Cohn has flown with the shin bone of a giant ground sloth and a cooler full of turtle embryos.
UC Davis graduates Gurkern Sufi and Arshia Firouzi created a microchip device that allows scientists to prepare hundreds of mice embryos for research at a time.
The 1996 Dickey-Wicker amendment, added by Congress to budget language every year, forbids the use of federal funds in research that destroys embryos.
The gene drive variant would self-propagate, performing a copy-and paste into any unmodified genes present in embryos.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'embryo'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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: 1548See Words from the same year
EMBRYO Defined for English Language Learners
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
Definition of embryo for Students
1 : an unborn human or animal in the earliest stages of growth when its basic structures are being formed
2 : a tiny young plant inside a seed
Medical Definition of embryo
1archaic : a vertebrate at any stage of development prior to birth or hatching
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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