(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
noun, Astronomy. 1. a number (preceded by M) designating the 109 double stars, clusters, nebulae, and galaxies in the Messier catalog.
[meys-yurz, mes-erz; French me-syœ] /meɪsˈyɜrz, ˈmɛs ərz; French mɛˈsyœ/ noun 1. plural of . [muh s-yur; French muh-syœ] /məsˈyɜr; French məˈsyœ/ noun, plural messieurs [meys-yurz, mes-erz; French me-syœ] /meɪsˈyɜrz, ˈmɛs ərz; French mɛˈsyœ/ (Show IPA) 1. the conventional French title of respect and term of address for a man, corresponding to Mr. or sir. /ˈmɛsəz; […]
[mes-uh-lee] /ˈmɛs ə li/ adverb 1. in a manner.
[mes-uh n] /ˈmɛs ən/ noun, Scot. 1. . [mes-uh n] /ˈmɛs ən/ noun, Scot. 1. a lap dog; small pet dog.