
1) Uncontrolled nodding
Found on
https://www.crosswordclues.com/clue/nutation

Nutation (from Latin nūtātiō, `nodding, swaying`) is a rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behavior of a mechanism. In an appropriate reference frame it can be defined as a change in the second Euler angle. If it .....
Found on
http://en.wikipedia.org/wiki/Nutation
[botany] Nutation is the bending movements executed by some plant organs, such as stems, leaves, roots, etc., by which the part is inclined successively in various directions. Nutations are due to the unequal rate of growth of different sides of the organ, an inequality which, so far as is known at present (c. 1915), is dependent upon inter...
Found on
http://en.wikipedia.org/wiki/Nutation_(botany)
[engineering] In engineering, a nutating motion is similar to that seen in a swashplate mechanism. In general, a nutating plate is carried on a skewed bearing on the main shaft and does not itself rotate, whereas a swashplate is fixed to the shaft and rotates with it. The motion is similar to the motions of coin or a tire wobbling on the gr...
Found on
http://en.wikipedia.org/wiki/Nutation_(engineering)

fluctuation or nodding in movement of earth's pole
Found on
http://phrontistery.info/n.html

• (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 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.) The act of no...
Found on
http://thinkexist.com/dictionary/meaning/nutation/

in astronomy, a small irregularity in the precession of the equinoxes. Precession is the slow, toplike wobbling of the spinning Earth, with a period ... [4 related articles]
Found on
http://www.britannica.com/eb/a-z/n/64

A periodic variation in precession: in other words, a wobble on top of the main wobble of Earth's axis. The chief cause of nutation is the Moon moving in an orbit that is inclined (by 5°) to the ecliptic. This lunar nutation amounts to a +/- 9' back-and-forth jiggling of Earth's poles every 18.6...
Found on
http://www.daviddarling.info/encyclopedia/N/nutation.html

a small periodic motion of a rotating body undergoing precession which is superimposed on the precession and causes the axis of rotation of the body to oscillate about the cone of precession NOTE - Nutation generally has a period which is shorter than that of the precession.
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=725-11-54

A slow 'nodding' of the Earth's axis due to the gravitational tug of the Moon on the Earth's protuberant equator.
Found on
http://www.encyclo.co.uk/local/20448

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. <astronomy> 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. <botany> The motion of a flower in followin...
Found on
http://www.encyclo.co.uk/local/20973

(noo-ta´shәn) the act of nodding, especially involuntary nodding.
Found on
http://www.encyclo.co.uk/local/21001

A small nodding motion in a rotating body. Earth's nutation has a period of 18.6 years and an amplitude of 9.2 arc seconds.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Nu·ta'tion noun [ Latin
nutatio a nodding, from
nutare to nod: confer French
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 ...
Found on
http://www.encyclo.co.uk/webster/N/42

Nodding the head.
Found on
http://www.gadsbywicks.co.uk/uploaded/3822.pdf

Type: Term Pronunciation: nū-tā′shŭn Definitions: 1. The act of nodding, especially involuntary nodding.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=61903

In astronomy, nutation is a slight 'nodding' of the Earth in space, caused by the varying gravitational pulls of the Sun and Moon. Nutation changes the angle of the Earth's axial tilt by about nine seconds of arc to either side of its mean position, a complete cycle taking just over 18.5 years.
Found on
http://www.probertencyclopaedia.com/browse/AN.HTM

In botany, nutation is the spiral movement exhibited by the tips of certain stems during growth; it enables a climbing plant to find a suitable support.
Found on
http://www.probertencyclopaedia.com/browse/BN.HTM

[
n] - uncontrolled nodding
Found on
http://www.webdictionary.co.uk/definition.php?query=nutation
noun uncontrolled nodding
Found on
https://www.encyclo.co.uk/local/20974
(astronomy) In astronomy, slight `nodding` of the Earth in space, caused by the varying gravitational pulls of the Sun and Moon. Nutation changes the angle of the Earth's axial tilt (average 23.5°) by about 9 seconds of arc to either side of its mean position, a complete cyc...
Found on
https://www.encyclo.co.uk/local/21221
(botany) In botany, the spiral movement exhibited by the tips of certain stems during growth; it enables a climbing plant to find a suitable support. Nutation sometimes also occurs in tendrils and flower stalks. The direction of the movements, clockwise or anticlockwise, is usually charact...
Found on
https://www.encyclo.co.uk/local/21221

an act or instance of nodding one's head, esp. involuntarily or spasmodically. · spontaneous movements of plant parts during growth. · the periodic oscillation observed in the precession of the earth's axis and the precession of the equinoxes. · the variation of the inclination of the axis of a gyroscope to the vertical.
Found on
https://www.infoplease.com/dictionary/nutation
No exact match found.