Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun libration

1 sense of libration

Sense 1
libration -- ((astronomy) a real or apparent slow oscillation of a moon or satellite; "the libration of the moon")
       => oscillation -- (the process of oscillating between states)
       => variation -- ((astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon))