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English Dictionary - With Multi-Lingual Search Definitions quantum leap noun  (physics) The discontinuous change of the state of an electron in an atom or molecule from one energy level to another. (metaphorical) An abrupt change.        Find:   Words Starting With:   Words Ending With:   Words Containing:   Words That Match:    Translate Into:    Dutch   French   German    Italian   Spanish     Show 51015202550 results per page. Enter your search terms Submit search form   Web www.allwords.com Browse the Dictionary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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