noun.
Any atmospheric phenomenon.
noun.
Specifically A transient fiery or luminous body seen in or through the atmosphere, usually in its more elevated region: a shooting-star. If it reaches the surface of the earth, it is called a meteorite, formerly aƫrolite, and also (very rarely) uranolite.
noun.
A small body moving in space, and of the same nature as those which become visible by encountering our atmosphere.
noun.
An abbreviation of meteorology, meteorological.