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Meaning of true vocal cords

true' vo'cal cords"

Pronunciation: [key]
— Anat. Anat.
  1. the lower pair of vocal cords, the edges of which can be made to tense and relax by the passage of air from the lungs, thus producing vocal sound. Also calledCf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.