TERMINATOR (from the Latin terminate, to limit), in astronomy, the bounding line beween light and darkness on the apparent disk of the moon or of a planet.
See also Terminator (solar) on Wikipedia; and our 1911 Encyclopædia Britannica disclaimer.
TERMINATOR (from the Latin terminate, to limit), in astronomy, the bounding line beween light and darkness on the apparent disk of the moon or of a planet.