# What does nutation mean?

## Here's a list of possible definitions for the term nutation:

### Princeton's WordNet

1. nutation(noun)

uncontrolled nodding

### Wiktionary

1. nutation(Noun)

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

2. nutation(Noun)

a nodding motion (of the head etc.)

3. nutation(Noun)

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

4. nutation(Noun)

the circular motion of the tip of a growing shoot

### Webster Dictionary

1. Nutation(noun)

the act of nodding

2. Nutation(noun)

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. Nutation(noun)

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

4. Nutation(noun)

circumnutation

5. Origin: [L. nutatio a nodding, fr. nutare to nod: cf. F. nutation.]

### Freebase

1. Nutation

Nutation 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. If it is not caused by forces external to the body, it is called free nutation or Euler nutation. A pure nutation is a movement of a rotational axis such that the first Euler angle is constant. In spacecraft dynamics, precession is sometimes referred to as nutation.

### The Nuttall Encyclopedia

1. 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.

### Dictionary of Nautical Terms

1. nutation

An oscillatory motion of the earth's axis, due chiefly to the action of the moon upon the spheroidal figure of our globe.

### Numerology

1. Chaldean Numerology

The numerical value of nutation in Chaldean Numerology is: 6

2. Pythagorean Numerology

The numerical value of nutation in Pythagorean Numerology is: 6

© Definitions.net