Definition of Nutateon
Nutation, name given to a slight oscillatory movement noticeable in
the celestial pole of the earth, due to the latter not being a perfect
sphere.
- Wikipedia
Nu*ta"tion (?), n. [L. nutatio a
nodding, fr. nutare to nod: cf. F. nutation.]
1. The act of nodding.
So from the midmost the nutation spreads,
Round and more round, o'er all the sea of heads.
Pope.
2. (Astron.) A very small libratory
motion of the earth's axis, by which its inclination to the plane of
the ecliptic is constantly varying by a small amount.
3. (Bot.) (a) The
motion of a flower in following the apparent movement of the sun,
from the east in the morning to the west in the evening.
(b) Circumnutation.
- Webster's Unabridged Dictionary (1913)
- (Astronomy) A nodding motion of the earth's pole superimposed on the slow precession.
- The Nuttall Encyclopedia
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