The Collaborative International Dictionary
Intorsion
Intorsion \In*tor"sion\, n. [L. intortio a curling, crisping: cf. F. intorsion. See Intort, and cf. Intortion.]
A winding, bending, or twisting.
(Bot.) The bending or twining of any part of a plant toward one side or the other, or in any direction from the vertical.
Wiktionary
intorsion
n. 1 A winding, bending, or twisting. 2 (context botany English) The bending or twining of any part of a plant toward one side or the other, or in any direction from the vertical.