Definition of guaiac in English:

guaiac

Syllabification: guai·ac
Pronunciation: /ˈgwīak
 
/

noun

Brown resin obtained from guaiacum trees, used as a flavoring and in varnishes. It was formerly used medicinally and as a test for traces of blood.
More example sentences
  • Mint flavoring compositions and wax-free gum bases are provided which are stabilized using gum guaiac, a naturally-occurring resin, as an antioxidant.

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