American English

Definition of embryo noun from the Oxford Advanced American Dictionary



    (pl. embryos)
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  1. 1a young animal or plant in the very early stages of development before birth, or before coming out of its egg or seed, especially a human egg in the first eight weeks after fertilizationfertilize human embryos
  2. 2(figurative) the embryo of an idea
  3. Idioms existing but not yet fully developed The idea already existed in embryo in his earlier novels.
See the Oxford Advanced Learner's Dictionary entry: embryo