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perihelion

play
noun peri·he·lion \ˌper-ə-ˈhēl-yən\

Definition of perihelion

plural

perihelia

play \-ˈhēl-yə\
  1. :  the point in the path of a celestial body (as a planet) that is nearest to the sun — compare aphelion

perihelial

play \-ˈhēl-yəl\ adjective


Origin and Etymology of perihelion

New Latin, from peri- + Greek hēlios sun — more at solar


First Known Use: 1666


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