prop·a·gule (prŏp'ə-gyōōl') n. Any of various usually vegetative portions of a plant, such as a bud or other offshoot, that aid in dispersal of the species and from which a new individual may develop.
[New Latin prōpāgulum, diminutive of Latin prōpāgō, shoot, from prōpāgāre, to propagate; see propagate.]