To double again; multiply; repeat.
In philology, to repeat, as a syllable or the initial part of a syllable (usually a root-syllable). See reduplication.
In philology, to be doubled or repeated; undergo reduplication: as, reduplicating verbs.
Redoubled; repeated; reduplicative.
In botany:
Valvate, with the edges folded back so as to project outward: said of petals and sepals in one form of estivation.
Describing an estivation so characterized. Also reduplicative.