a. (L. involutus, rolled up) leaves having the edges rolled inwards at each side, toward the adaxial side.
rolled inwards; of a leaf, with the margins rolled towards the adaxial surface. cf. revolute.
especially of petals or leaves in bud; having margins rolled inward
Rolled inward from the edges, toward the upper surface.
Of the margin of the pileus: Rolled in, especially when young. ( 17)
Margins of the ray florets roll forward along their longitudinal axis. When fully involute the margins touch or overlap so only the revers of the floret is visible.
Rolled inward or toward the upper side.
With edges rolled inward toward the upper surface.
In the differential geometry of curves, an involute of a smooth curve is another curve, obtained by attaching a string to the curve and tracing the end of the string as it is wound onto the curve. It is a roulette wherein the rolling curve is a straight line containing the generating point.