Hypertext Webster Gateway: "involute"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Involute \In"vo*lute\, Involuted \In"vo*lu`ted\, a. [L.
involutus, p. p. of involvere. See {Involve}.]
1. (Bot.) Rolled inward from the edges; -- said of leaves in
vernation, or of the petals of flowers in [ae]stivation.
--Gray.
2. (Zo["o]l.)
(a) Turned inward at the margin, as the exterior lip of
the Cyprea.
(b) Rolled inward spirally.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Involute \In"vo*lute\, n. (Geom.)
A curve traced by the end of a string wound upon another
curve, or unwound from it; -- called also {evolvent}. See
{Evolute}.
From WordNet (r) 1.7 (wn)
involute
adj 1: (botany) especially of petals or leaves in bud; having
margins rolled inward [syn: {rolled}]
2: (of some shells) closely coiled so that the axis is obscured
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