<p><strong>Noun:</strong></p><ul><li>the act of competing; rivalry for supremacy, a prize, etc.</li><li>a contest for some prize, honor, or advantage.</li><li>the rivalry offered by a competitor.</li><li>a competitor or competitors.</li><li>Sociology: rivalry between two or more persons or groups for an object desired in common, usually resulting in a victor and a loser but not necessarily involving the destruction of the latter.</li><li>Ecology: the struggle among organisms, both of the same and of different species, for food, space, and other vital requirements.</li></ul>