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momentum in physics, a quantity that characterizes the motion of a body, equal to its mass multiplied by its velocity. [2 definitions]
mommy (informal) mother; mama.
Mon. abbreviation of "Monday," the second day of the week, occurring between Sunday and Tuesday.
Monaco a tiny Mediterranean country surrounded by France. [2 definitions]
monad a single indivisible physical unit or metaphysical entity, esp. in philosophy. [3 definitions]
monandrous having only one husband at a time. (Cf. polyandrous.) [2 definitions]
monandry the practice or condition of having only one husband at a time. (Cf. polyandry.)
monarch a sole, often hereditary ruler such as a king, queen, or emperor. [2 definitions]
monarch butterfly a large orange, black, and white migratory butterfly.
monarchical pertaining to, belonging to, or like a monarch or monarchy. [2 definitions]
monarchism belief in or advocacy of monarchy.
monarchy a nation or government ruled by or in the name of a monarch whose power is either absolute or limited by a constitution. [2 definitions]
monastery a community of persons, esp. monks, who have taken religious vows of austerity and seclusion, or the buildings used by such a community for housing and worship.
monastic of or pertaining to monasteries or monks. [3 definitions]
monatomic containing one atom in the molecule. [3 definitions]
monaural of or pertaining to a sound-reproducing system that produces a single channel of output; monophonic. (Cf. stereophonic.)
monaxial having one axis; uniaxial. [2 definitions]
monazite a yellow-brown or red-brown mineral phosphate of rare-earth metals that is a major source of thorium, cerium, and the like.
Monday the second day of the week, occurring between Sunday and Tuesday.
Monday-morning quarterback (informal) one who evaluates, criticizes, or assesses the decisions or actions of others after the fact.
Mondays on Mondays; each Monday; every Monday.