guaiac

== English == === Noun === guaiac (countable and uncountable, plural guaiacs) (medicine) A paper treated with alpha-guaiaconic acid, used in tests to detect blood in the faeces. Guaiacum (tree, wood or resin of the guaiacum tree) Guaiacol. Oil of guaiac, a fragrance ingredient used in soap and perfumery distilled from the palo santo tree. ==== Derived terms ==== === References === “guaiac”, in OneLook Dictionary Search.