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evectional

 - 2 dictionary results

e⋅vec⋅tion

  [i-vek-shuhn]
Use evectional in a Sentence
–noun Astronomy.
a periodic irregularity in the moon's motion, caused by the attraction of the sun.
Origin:
1650–60; < L ēvectiōn- (s. of ēvectiō) a going upwards, flight, equiv. to ēvect(us) (ptp. of ēvehere to carry forth, move forth) + -iōn- -ion

Related forms:
e⋅vec⋅tion⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To evectional
e·vec·tion   (ĭ-věk'shən)   
n.  Solar perturbation of the lunar orbit.

[Latin ēvectiō, ēvectiōn-, a going up, from ēvectus, past participle of ēvehere, to raise up : ē-, ex-, up from; see ex- + vehere, to carry; see wegh- in Indo-European roots.]
e·vec'tion·al adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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