pure / pyoŏr/ • adj. not mixed or adulterated with any other substance or material: cars can run on pure alcohol the jacket was pure wool. ∎ without any extraneous and unnecessary elements: the romantic notion of pure art devoid of social responsibility. ∎ free of any contamination: the pure, clear waters of Montana. ∎ wholesome and untainted by immorality, esp. that of a sexual nature: our fondness for each other is pure and innocent. ∎ (of a sound) perfectly in tune and with a clear tone. ∎ (of an animal or plant) of unmixed origin or descent: the pure Charolais is white or light wheat in the coat. ∎ (of a subject of study) dealing with abstract concepts and not practical application: a theoretical discipline such as pure physics.Compare with applied. ∎ Phonet. (of a vowel) not joined with another to form a diphthong. ∎ involving or containing nothing else but; sheer (used for emphasis): a shout of pure anger an outcome that may be a matter of pure chance.PHRASES: pure and simple and nothing else (used for emphasis): it was revenge, pure and simple.DERIVATIVES: pure·ness n.