| zooid |
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noun
- (Biol.) An organic body or cell having locomotion, as a spermatic cell or spermatozooid.
- (Zoí¶l.) (a) An animal in one of its inferior stages of development, as one of the intermediate forms in alternate generation. (b) One of the individual animals in a composite group, as of Anthozoa, Hydroidea, and Bryozoa; " sometimes restricted to those individuals in which the mouth and digestive organs are not developed.
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| zoon |
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noun
- An animal which is the sole product of a single egg;
- Any one of the perfectly developed individuals of a compound animal.
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| zygosis |
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noun (zygoses)
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(biology) The union of gametes to form a zygote; conjugation.
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| zygote |
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noun
- A fertilize, fertilized egg cell.
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