|Messier catalogue (ˈmɛsɪeɪ)|
|astronomy a catalogue of 103 nonstellar objects, such as nebulae and galaxies, prepared in 1781--86. An object is referred to by its number in this catalogue, for example the Andromeda Galaxy is referred to as M31|
|[C18: named after Charles Messier (1730--1817), French astronomer]|
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