libration
noun/laɪˈbreɪʃən/
Frequency rank: #19,882 most common English word
Meaning
a slow oscillation or wobbling motion, especially the apparent wobbling of the Moon as seen from Earth, which reveals portions of its far side.
Example sentence
Scientists observed the libration of the Moon, which allowed them to see slightly more than half of its surface over time.
Synonyms & related words
- wobble
- oscillation
- swaying
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