gemmule
UK /ˈd͡ʒɛmjuːl/ · US /ˈd͡ʒɛˌm(j)ul/ noun
Forms gemmules
- noun (archaic) Synonym of gemma (“an asexual reproductive structure, as found in animals such as hydra (genus Hydra) and plants such as liverworts (division Marchantiophyta), consisting of a cluster of cells from which a new individual can develop”)
- noun (specifically, zoology) A small gemma or bud of dormant embryonic cells produced by some freshwater sponges (phylum Porifera) that develops into a new sponge.
- noun (historical) In the obsolete theory of pangenesis propounded by the English scientist Charles Darwin (1809–1882): a hypothetical particle once thought to be the basis of heredity.
- noun (botany) Synonym of plumule (“the first bud, or growing point, of a plant embryo, situated above the cotyledons”).
- noun (neurology) Synonym of dendritic spine (“a small membranous protrusion from the dendrite of a neuron that typically receives input from a single axon at the synapse”).
Synonyms
Etymology
Borrowed from French gemmule, from Latin gemmula (“small bud; small gem”), from gemma (“bud of a plant; gem, jewel; thing made of precious stones”) (further etymology uncertain; possibly from Proto-Indo-European *ǵenh₁- (“to beget, give birth; to produce”), but see further at that entry) + -ula (feminine form of -ulus (diminutive suffix)).
Webster’s 1913
- noun (a) A little leaf bud, as the plumule between the cotyledons.
- noun (a) A bud produced in generation by gemmation.
Etymology [L. gemmula, dim. of gemma: cf. F. gemmule. See Gem.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “gemmule”, CC BY-SA 4.0. Details