Perihelion
Perihelion , noun
[New Latin, from Greek peri` about, near + "h`lios the sun.]
(Astronomy) That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to aphelion.
Also: Perihelium
Perihelion , noun
[New Latin, from Greek peri` about, near + "h`lios the sun.]
Also: Perihelium