noun (used with a singular verb) Biology.
the study of the operation of factors that cause degeneration in offspring.
Origin of dysgenics
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(functioning as singular) the study of factors capable of reducing the quality of a race or strain, esp the human raceAlso called: cacogenics
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012