Definition of "guaiac" in English

noun

1. (medicine) A paper treated with alpha-guaiaconic acid, used in tests to detect blood in the faeces.

2. Guaiacum (tree, wood or resin of the guaiacum tree)

3. Guaiacol.

4. Oil of guaiac, a fragrance ingredient used in soap and perfumery distilled from the palo santo tree.