guaiac(redirected from guaiac gum)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to guaiac gum: Guaiacum
1. Any of several tropical American trees of the genus Guaiacum; a lignum vitae.
2. also guai·ac (gwī′ăk′)
a. The wood of a guaiacum.
b. A greenish-brown resin obtained from this tree, used medicinally and in varnishes.
[New Latin, from Spanish guayacán, from Taíno.]
1. a greenish brown resin obtained from the guaiacum tree, esp. from Guaiacum officinale, used in varnishes, as a food preservative, and as a medical test for the presence of blood in excreted matter.
[1550–60; see guaiacum]
Switch to new thesaurus
|Noun||1.||guaiac - hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum|
Guaiacum officinale, lignum vitae - small evergreen tree of Caribbean and southern Central America to northern South America; a source of lignum vitae wood, hardest of commercial timbers, and a medicinal resin
wood - the hard fibrous lignified substance under the bark of trees