- a periodic irregularity in the moon's motion, caused by the attraction of the sun.
Origin of evection
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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for evection
- irregularity in the moon's motion caused by perturbations of the sun and planets
C17: from Latin ēvectiō a going up, from ēvehere to lead forth, from vehere to carry