Revolute
Pronunciation : Rev"o*lute
Part of Speech : a.
Etymology : [L. revolutus, p. p. of revolvere. See Revolve.] (Bot. & Zo?l.)
Definition : Defn: Rolled backward or downward.
Note: A revolute leaf is coiled downwards, with the lower surface inside the coil. A leaf with revolute margins has the edges rolled under, as in the Andromeda polifilia.
Source : Webster's Unabridged Dictionary, 1913