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fragment British & World English

A small part broken off or separated from something

fragment English Thesaurus

more than 5000 meteorite fragments

restriction fragment British & World English

A fragment of a DNA molecule that has been cleaved by a restriction enzyme

restriction fragment length polymorphism British & World English

A variation in the length of restriction fragments produced by a given restriction enzyme in a sample of DNA. Such variation is used in forensic investigations and to map hereditary disease