Medical Dictionary


noun guai·a·cum \ˈg(w)ī-ə-kəm\

Medical Definition of GUAIACUM

capitalized :  a genus (family Zygophyllaceae) of tropical American trees and shrubs having pinnate leaves, usually blue flowers, and capsular fruit
:  any tree or shrub of the genus Guaiacum
:  a resin with a faint balsamic odor obtained as tears or masses from the trunk of either of two trees of the genus Guaiacum (G. officinale or G. sanctum) used formerly in medicine as a remedy for gout or rheumatism and now in various tests (as for peroxidases or bloodstains) because of the formation of a blue color on oxidation—see guaiac test


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