perihelion
peri·he·lion
noun \ˌper-ə-ˈhēl-yən\ plural peri·he·lia\-ˈhēl-yə\
Definition of PERIHELION
: the point in the path of a celestial body (as a planet) that is nearest to the sun — compare aphelion
— peri·he·lial \-ˈhēl-yəl\ adjective
See Origin of PERIHELION
New Latin, from peri- + Greek hēlios sun — more at solar
First Known Use: 1666
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