### Nutation

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.

### 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

### nutation

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

### nutation

[n] - uncontrolled nodding
Found on http://www.webdictionary.co.uk/definition.php?query=nutation

### Nutation

• (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/

### nutation

noun uncontrolled nodding
Found on http://wordnetweb.princeton.edu/perl/webwn?s=nutation

### nutation

(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 http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0010353.html

### nutation

(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 http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0007060.html

### 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)

### Nutation

[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)

### Nutation

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

### 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. <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

### nutation

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

### Nutation

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

### nutation

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

### nutation

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

### 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

### Nutation

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

### Nutation

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

### Nutation

Latin name (dt "the swaying") for the automatic, without (nutate) external stimulus executed movement of plant growth. This is caused by uneven growth of different sides of a plant part. These include the Vine For example, the opening of the buds or the circling search of Tendrils . The peak (peak) of the growing shoot is bent like a hook...
Found on http://www.wein-plus.eu/en/Nutation_3.0.6607.html