circumnutate

Century Dictionary and Cyclopedia

1. To nod or turn about; specifically, in botany, to move about in a more or less circular or elliptical path: said of the apex of a stem and of other organs of a plant. See circumnutation.

Wiktionary

1. v. botany to bend in a direction that is continuously moving in a horizontal direction

GNU Webster's 1913

1. v. To pass through the stages of circumnutation.