Associations to the word «Libration»

Wiktionary

LIBRATION, noun. The act of librating.
LIBRATION, noun. (astronomy) The apparent wobble or variation in the visible side of the Moon that permanently faces the Earth, allowing observers on Earth to see, over a period of time, slightly more than half of the lunar surface.
LIBRATION, noun. (by extension) A similar rotational or orbital characteristic of some other celestial body.

Dictionary definition

LIBRATION, noun. (astronomy) a real or apparent slow oscillation of a moon or satellite; "the libration of the moon".

Wise words

The words of truth are simple.
Aeschylus