precession
/pɹisˈɛʃən/
Word Rarity
Very rare
Frequency: Zipf frequency 2.44 in modern English
14
Scrabble Score
10
Letters
3
Syllables
8
Unique Chars
Meaning
noun
The wobbling motion of the axis of a spinning body when there is an external force acting on the axis.
Countable
noun
The slow gyration of the earth's axis around the pole of the ecliptic, caused mainly by the gravitational torque of the sun and moon.
Uncountable
noun
Any of several slow changes in an astronomical body's rotational or orbital parameters.
Countable; Uncountable
Example Sentences
Etymology
From Middle English precessioun, precession, from Medieval Latin prēcessiōn-, prēcessio, from Latin praecēdō.
Origin
Word Breakdown
- Root: precessioun, praecessio, praecēdō
Usage
Inflected Forms
precessions (plural)
præcession (alternative, obsolete)