n. 幻日

Anthelion \Ant*hel"ion\ (?; 277, 106), n.; pl. {Anthelia}.
[Pref. anti + Gr. ? sun.] (Meteor.)
A halo opposite the sun, consisting of a colored ring or
rings around the shadow of the spectator's own head, as
projected on a cloud or on an opposite fog bank.

Parhelion \Par*hel"ion\, n.; pl. {Parhelia}. [L. parelion, Gr.
?, ?; para` beside + ? the sun.]
A mock sun appearing in the form of a bright light, sometimes
near the sun, and tinged with colors like the rainbow, and
sometimes opposite to the sun. The latter is usually called
an {anthelion}. Often several mock suns appear at the same
time. Cf. {Paraselene}.