gem·mule (j m y l)n. 1. A small gemma or similar structure, especially a reproductive structure in some sponges that remains dormant through the winter and later develops into a new individual. 2. A hypothetical particle of heredity postulated to be the mediating factor in the production of new cells in the theory of pangenesis. [French, from Latin gemmula, diminutive of gemma, bud; see gembh- in Indo-European roots.] gem  mu·lifer·ous (jmy-l f r-s) adj. |
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