See also: précession


English Wikipedia has an article on:

Alternative formsEdit


From Middle English precessioun, precession, from Medieval Latin prēcessiōn-, prēcessio, from Latin praecēdō.


precession (countable and uncountable, plural precessions)

  1. (uncountable) Precedence.
    But as it will not do to talk entirely at random, as Montaigne does, and Ralph Waldo Emerson tries to do, we must take up some little thread or threads. and string our thoughts thereupon, keeping up also a relation among them of precession and succession.
  2. (physics, countable) The wobbling motion of the axis of a spinning body when there is an external force acting on the axis.
  3. (astronomy, uncountable) 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.
  4. Any of several slow changes in an astronomical body's rotational or orbital parameters.

Derived termsEdit

Related termsEdit


The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.