libration (redirected from librating)

li·bra·tion  (l-brshn)

n.

A very slow oscillation, real or apparent, of a satellite as viewed from the larger celestial body around which it revolves.

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[Latin lbrtio, lbrtin-, oscillation, from lbrtus, past participle of lbrre, to balance, from lbra, balance.]

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li·bration·al adj.

libra·tory (-br-tôr, -tr) adj.

Thesaurus

Noun

1.

libration - (astronomy) a real or apparent slow oscillation of a moon or satellite; "the libration of the moon" astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole variation - (astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon) oscillation - the process of oscillating between states