Definitions that contains libration from BoostVocab

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libration

/laɪ'breɪʃən/

Synonyms of libration Antonyms of libration Examples of libration Usage of libration Parts of libration Definition that contains libration Words sounding like libration Explanation of libration

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

type of:
oscillation variation

Definition that contains libration

octant a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration
cross hair either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration
cross wire either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration