SINCE 1828
libration
noun
li·bra·tion
| \ lī-ˈbrā-shən
\
\
Definition of libration
: an oscillation in the apparent aspect of a secondary body (such as a planet or a satellite) as seen from the primary object around which it revolves
Other Words from libration
librational
\ lī-ˈbrā-shnəl
, -shə-nᵊl \
adjective
, -shə-nᵊl \
adjective
libratory
\ ˈlī-brə-ˌtȯr-ē
\
adjective
\
adjective
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Merriam-Webster unabridged
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