dysgenics

from WordNet (r) 3.0 (2006)

dysgenics
    n 1: the study of the operation of factors causing degeneration
         in the type of offspring produced [syn: {dysgenics},
         {cacogenics}] [ant: {eugenics}]

from The Collaborative International Dictionary of English v.0.48

dysgenics \dysgenics\ n.
   the study of the operation of factors causing degeneration in
   the type of offspring produced.

   Syn: cacogenics.
        [WordNet 1.5]

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