triploiding
 n.— «The process is called triploiding. It involves using heat or pressure treatment on trout eggs which results in an extra set of chromosomes in the fish. The offspring of these fish are infertile and can not reproduce, but are not harmed in any other way, officials say.» —“Gillingham takes post as new director for Virginia Saltwater Fishing Tournament” by Bill Cochran Roanoke Times (Virginia) Aug. 2, 2007. (source: Double-Tongued Dictionary)

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