Definition of guaiac in English:

guaiac

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.

    • ‘Mint flavoring compositions and wax-free gum bases are provided which are stabilized using gum guaiac, a naturally-occurring resin, as an antioxidant.’

Pronunciation:

guaiac

/ˈɡwīak/