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nutation |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Nutation \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. From WordNet r 1.6 [wn]: nutation n : the act of nodding the head [syn: {nod}]
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