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| e·vec·tion [ i véksh'n ] |
noun |
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| Definition: |
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periodic variation in Moon's motion: a periodic irregularity in the motion of the Moon caused by the variation in the gravitational attraction of the Sun as the Moon orbits Earth
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| [Mid-17th century. < Latin evection-< evect-, past participle of evehere "carry out, elevate" < vehere "carry"] |
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 e·vec·tion·al adjective |
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