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Jacobson's organ: Meaning and Definition of

Ja'cob•son's or'gan

Pronunciation: ( jā'kub-sunz), [key]
— Anat., Zool. Anat.,Zool.
  1. either of a pair of blind, tubular, olfactory sacs in the roof of the mouth, vestigial in humans but well-developed in many animals, esp. reptiles.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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