Definition of guaiacum
1 : any of a genus (Guaiacum) of the caltrop family of tropical American evergreen trees and shrubs having pinnate leaves, usually blue flowers, and capsular fruit
2 a : the hard greenish-brown wood of a guaiacum (especially Guaiacum officinale) b : a resin with a faint balsamic odor that is obtained from the trunk of two guaiacums (G. officinale and G. sanctum) and often used as a clinical reagent
Origin of guaiacum
New Latin, from Spanish guayaco, from Taino guayacan
First Known Use: 1553
Medical Definition of guaiacum
1 capitalized : a genus (family Zygophyllaceae) of tropical American trees and shrubs having pinnate leaves, usually blue flowers, and capsular fruit
2: any tree or shrub of the genus Guaiacum
3: 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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Medical Dictionary: Definition of "guaiacum"
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