Main Entry: op·po·si·tion

Pronunciation: \ˌä-pə-ˈzi-shən\

Function: noun

Date: 14th century

1 : a configuration in which one celestial body is opposite another (as the sun) in the sky or in which the elongation is near or equal to 180 degrees
2 : the relation between two propositions having the same subject and predicate but differing in quantity or quality or both
3 : an act of setting opposite or over against : the condition of being so set
4 : hostile or contrary action or condition
5 a : something that opposes; specifically : a body of persons opposing something b often capitalized : a political party opposing and prepared to replace the party in power

— op·po·si·tion·al \-ˈzish-nəl, -ˈzi-shə-n^əl\ adjective