Also found in: Thesaurus, Medical, Encyclopedia.
1. A small gemma or similar structure, especially a reproductive structure in certain sponges that remains dormant for some time and later develops into a new individual.
2. A hypothetical particle in the theory of pangenesis, postulated to be produced by cells and to be responsible for transmitting traits from parent to offspring.
gem′mu·lif′er·ous (jĕm′yo͞o-lĭf′ər-əs) adj.