circumnutation

circumnutate

[sur-kuhm-noo-teyt, -nyoo-]
verb (used without object), circumnutated, circumnutating.
(of the apex of a stem or other growing part of a plant) to bend or move around in an irregular circular or elliptical path.

Origin:
1875–80; circum- + nutate < Latin nūtātus, past participle of nūtāre to nod in assent, sway, totter

circumnutation, noun
circumnutatory [sur-kuhm-noo-tuh-tawr-ee, -tohr-ee, -nyoo-] , adjective
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World English Dictionary
circumnutation (ˌsɜkəmnjuːˈteɪʃən)
 
n
another name for nutation
 
[C19: from circum- + -nutate, from Latin nūtāre to nod repeatedly, sway]

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