noun evec·tion \ə̇ˈvekshən, ēˈ-\

Definition of evection



  1. 1 :  perturbation of the moon's motion in its orbit due to the attraction of the sun

  2. 2 in certain filamentous algae :  displacement of the base of a new branch with respect to its parent cell so as to result in apparent dichotomy


\-shənəl, -shnəl\ adjective

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of evection

Latin evection-, evectio act of going up, from evectus (past participle of evehere to carry out, raise up, from e- + vehere to carry) + -ion-, -io -ion — more at way

Seen and Heard

What made you want to look up evection? Please tell us where you read or heard it (including the quote, if possible).


to help become familiar with something

Get Word of the Day daily email!