libration

libration Definition

li·bra·tion (lī brā′s̸hən)

noun

the act of librating
Astron. a slight rocking motion of the moon which allows 59% of the moon's surface to be visible from the earth

Etymology: L libratio

libration Related Forms

li′·bra·to′ry (-brə tôr′ē) adjective

libration Usage Examples

Converse of object

show: The capture clearly shows the libration spreading widening the signal ( a clear tone would show up as a narrow line ).

Adjective modifier

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