Perihelion
Pronunciation : Per`i*hel"ion, Per`i*he"li*um
Part of Speech : n.;
Etymology : [NL., fr. Gr. (Astron.)
Definition : Defn: That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to Ant: aphelion.
pl. Perihelia.
Source : Webster's Unabridged Dictionary, 1913