n.
Pronunciation: a- ' f ē l-y ə n, ˌ ap- ' h ē l-
Function: noun
Inflected Form: plural -elia \ -y ə \
Etymology: New Latin, from apo- + Greek h ē lios sun ― more at SOLAR
Date: 1656
: the point in the path of a celestial body (as a planet) that is farthest from the sun ― compare PERIHELION