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Meaning of Kallikak

Kal•li•kak

Pronunciation: (kal'i-kak"), [key]
— n.
  1. the fictitious name of an actual family that was the focus of a sociological study: one branch of feeble-minded descendants were mostly social degenerates, while another branch with descendants of normal intelligence were mostly successful. Cf. Jukes.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.