geminiform

English

Etymology

From Latin geminī (“twins”) + -form.

Adjective

geminiform (not comparable)

1. (botany, rare) Having a structure consisting of two identical parts.
   • 1880, Charles Lapworth, “On the Geological Distribution of the Rhabdophora. Part III. Results”, in The Annals and Magazine of Natural History, volume V (fifth series), number XXV, London: Taylor and Francis, page 279:

     The Upper Skiddaw of the Lake District possibly includes some horizons not embraced in the more typical and Upper Arenig beds of South Wales, or in the corresponding Scanian strata that overlie the Swedish Orthoceras-Limestone; but in all these beds the salient character of the Graptolite fauna is the predominance of individuals of Didymograptus, among which the "geminiform" species D. bifidus, Hall, is especially common.