[ gwahy-ak ]

  1. Also called guai·a·cum gum [gwahy-uh-kuhm guhm]; /ˈgwaɪ ə kəm ˈgʌm/; gum guaiac . a greenish-brown resin obtained from the guaiacum tree, especially from Guaiacum officinale, used in varnishes, as a food preservative, and in medicine in various tests for the presence of blood.

Origin of guaiac

First recorded in 1550–60; see origin at guaiacum

Words Nearby guaiac Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use guaiac in a sentence