| impure | 1. Not pure; not clean; dirty; foul; filthy; containing something which is unclean or unwholesome; mixed or impregnated extraneous substances; adulterated; as, impure water or air; impure drugs, food, etc. 2. Defiled by sin or guilt; unholy; unhallowed; said of persons or things. 3. Unchaste; lewd; unclean; obscene; as, impure language or ideas. "Impure desires." 4. Not purified according to the ceremonial law of Moses; unclean. 5. Not accurate; not idiomatic; as, impure Latin; an impure style. Origin: L. Impurus; pref. Im- not + purus pure: cf. F. Impur. See Pure. Source: Websters Dictionary (01 Mar 1998) |
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| impure flutter | Mixture of atrial flutter (FF) waves and fibrillation (ff) waves in the electrocardiogram. Synonym: fibrilloflutter, flutter-fibrillation. (05 Mar 2000) |