evection

 
Pronunciation: /ɪˈvɛkʃ(ə)n/

noun

[mass noun] Astronomy
  • regular variation in the eccentricity of the moon’s orbit around the earth, caused mainly by the sun’s attraction.

Origin:

mid 17th century (in the sense 'elevation, exaltation'): from Latin evectio(n-), from evehere 'carry out or up', from e- (variant of ex-) 'out' + vehere 'carry'