evection

[ ih-vek-shuhn ]

Phonetic (Standard)IPA

noun

, Astronomy.

a periodic irregularity in the moon's motion, caused by the attraction of the sun.

evection

/ ɪˈvɛkʃən /

noun

irregularity in the moon's motion caused by perturbations of the sun and planets

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Derived Forms

eˈvectional, adjective

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Other Words From

e·vection·al adjective

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Word History and Origins

Origin of evection¹

1650–60; < Latin ēvectiōn- (stem of ēvectiō ) a going upwards, flight, equivalent to ēvect ( us ) (past participle of ēvehere to carry forth, move forth) + -iōn- -ion

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Word History and Origins

Origin of evection¹

C17: from Latin ēvectiō a going up, from ēvehere to lead forth, from vehere to carry

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Example Sentences

His chief discovery was an irregularity of the lunar motion, called the ‘evection.’

From Project Gutenberg

This he called the evection, and introduced another epicycle to represent it.

From Project Gutenberg

eve Evelyn

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