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embryo

em·bry·o [ émbree  ] (plural em·bry·os)


noun 
Definition:
 
1. human offspring in initial developmental stage: a human offspring in the early stages following conception up to the end of the eighth week, after which it is classified as a fetus

2. animal in initial developmental stage: the developing young of an animal from the earliest stages after conception up to birth or hatching

3. plant in initial developmental stage: a plant in its earliest stages of development. In seed-bearing plants, the embryo is contained within the seed.

4. early form of something: an early form or rudimentary stage of something
the embryo of an exciting new invention

[14th century. Via Latin< Greek embruon< bruein "swell, grow"]
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