An Etymological Dictionary of Astronomy and Astrophysics

A type of → lunar eclipse that occurs when both the Sun and the eclipsed Moon can be observed at the same time. This is possible only when lunar eclipse occurs just before sunset or just after sunrise. At that case, both bodies will appear just above the horizon at nearly opposite points in the sky.
Also called → selenelion and → selenehelion.

See also: → horizontal; → eclipse.