precession

noun (precession, uncountable)

«precession» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

Everyday

(science) The slow turning of the axis of a spinning object, such as a spinning top or the Earth, so that the axis traces a circle. tree →
(science) The slow change in the direction of Earth's axis, taking about 26,000 years for one circle. tree →

In the lessons

In science lessons, a spinning top wobbles in a circle: that is precession. Earth's axis also precesses slowly, so the North Star changes over thousands of years.

Examples

A spinning top shows precession when it wobbles. tree →
Because of precession, Polaris will not always be the North Star. tree →
Precession of the Earth's axis takes about 26,000 years. tree →
The gyroscope's precession was slow. tree →
Scientists measure precession with telescopes. tree →
Precession changes which stars we see at the pole. tree →

Note

Not «procession» (a line of people walking). Verb: precess.

On Mova

Trees and pragmatics of «precession» in the school dictionary: every meaning and example parsed by Mova, with its dependency tree and frames.
«precession» in the school dictionary on Mova free.

This page in Markdown → https://md.dictionary.elamur.ai/free/en/english/precession/