This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The act or an instance of nodding the head.

n. A wobble in a spinning gyroscope or other rotating body.

n. Astronomy A small periodic motion of the celestial pole of the earth with respect to the pole of the ecliptic.

n. Botany A slight curving or circular movement in a stem, as of a twining plant, caused by irregular growth rates of different parts.

n. a bobbing motion that accompanies the precession of a spinning rigid body

n. a nodding motion (of the head etc.)

n. any of several irregularities in the precession of the equinoxes caused by varying torque applied to the Earth by the Sun and the Moon

n. the circular motion of the tip of a growing shoot

n. The act of nodding.

n. 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.

n.

n. 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.

n. Circumnutation.

n. A nodding.

n. In pathology, a constant nodding or involuntary shaking of the head.

n. In astronomy, a small subordinate gyratory movement of the earth's axis, in virtue of which, if it subsisted alone, the pole would describe among the stars, in a period of about nineteen years, a minute ellipse, having its longer axis directed toward the pole of the ecliptic, and the shorter, of course, at right angles to it.

n. In botany, same as circumnutation.

n. uncontrolled nodding

"This phenomenon, known as "nutation," was discovered by the beautiful telescopic researches of Bradley, in 1747."

nod   

chandler's nutation    constant of nutation   

circumnutation   

circumnutation   

dissymmetry    tubbing    intermittency    catenation    quotidian    grazers    precession    petiole    billwould    astigmatism