dysgenics

[dis-jen-iks]
noun (used with a singular verb) Biology.
the study of the operation of factors that cause degeneration in offspring.

Origin:
1915–20; see dysgenic, -ics

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dysgenics (dɪsˈdʒɛnɪks)
 
n
(functioning as singular) Also called: cacogenics the study of factors capable of reducing the quality of a race or strain, esp the human race

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Example sentences
He called it dysgenics, which is the opposite of eugenics.
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