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Meaning of guaiac

guai•ac

Pronunciation: (gwī'ak), [key]
— n.
  1. Also calleda greenish-brown resin obtained from the guaiacum tree, esp. from Guaiacum officinale, used in varnishes, as a food preservative, and in medicine in various tests for the presence of blood.
  2. guaiacum (def. 2).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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