Definition of pure

• free of extraneous elements of any kind; "pure air and water"; "pure gold"; "pure primary colors"; "the violins pure and lovely song"; "pure tones"; "pure oxygen"
• without qualification; used informally as (often pejorative) intensifiers; "an arrant fool"; "a complete coward"; "a consummate fool"; "a double-dyed villain"; "gross negligence"; "a perfect idiot"; "pure folly"; "what a sodding mess"; "stark staring mad"; "a thoroughgoing villain"; "utter nonsense"; "the unadulterated truth"
• concerned with theory and data rather than practice; opposed to applied; "pure science"