Definition of Guaiac

1. Noun. Hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum.

Exact synonyms: Guaiacum, Lignum Vitae
Substance meronyms: Guaiacum Officinale, Lignum Vitae
Generic synonyms: Wood

Definition of Guaiac

1. a. Pertaining to, or resembling, guaiacum.

Definition of Guaiac

1. Noun. (medicine) A paper treated with alpha-guaiaconic acid, used in tests to detect blood in the faeces. ¹

¹ Source:

Definition of Guaiac

1. guaiacum [n -S] - See also: guaiacum

Medical Definition of Guaiac

1. Resin from wood of guajacum officinale l. Or g. Sanctum l., family zygophyllaceae. Used as clinical reagent for occult blood. Pharmacological action: indicators and reagents. Chemical name: Guaiacum (resin) (12 Dec 1998)

Guaiac Pictures

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Lexicographical Neighbors of Guaiac

guadalupe fur seal
guaiac (current term)
guaiac gum
guaiac test
guaiac wood
guaiacol glyceryl ether
guaiacol phosphate
guaiacum wood
guaiacylglycerol beta-O-4-guaiacyl ether dehydrogenase

Literary usage of Guaiac

Below you will find example usage of this term as found in modern and/or classical literature:

1. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1907)
"0.005 gram of blood was added to 1 gram of feces; guaiac, turpentine method, light greenish color, which faded, was positive; ..."

2. Diagnostic Methods, Chemical, Bacteriological and Microscopical: A Text-book by Ralph Waldo Webster (1912)
"guaiac Test. This test originally devised by van Deen is one of our oldest for the detection of blood coloring matter, but seems to be much more reliable in ..."

3. A Manual of Pharmacology and Its Applications to Therapeutics and Toxicology by Torald Hermann Sollmann (1922)
"guaiac is an almost obsolete remedy for syphilis, gout, rheumatism, ... The resin obtained from guaiac Wood. It contains a number of resinous acids, ..."

4. Hand-book of Chemistry by Leopold Gmelin, Henry Watts (1866)
"Yellow colouring matter of guaiac resin. Observed by Pelletier. Powdered guaiac resin is boiled with milk of lime, and the liquid is filtered and evaporated ..."

5. Diseases of the Stomach and Upper Alimentary Tract by Anthony Bassler (1910)
"guaiac Test.—This test is delicate enough for practical purposes but not as satisfactory in the routine way as the benzidine or the aloin. ..."

6. The Retrospect of Practical Medicine and Surgery: Being a Half-yearly edited by William Braithwaite, James Braithwaite, Edmond Fauriel Trevelyan (1873)
"... of guaiac in ten-grain doses daily, and had the satisfaction of seeing the patient soon leave the hospital perfectly well, without any other treatment. ..."

7. Indicators and Test-papers: Their Source, Preparation, Application, and by Alfred Isaac Cohn (1902)
"Preparation: White, unsized paper is impregnated with aI : 100 tincture of guaiac resin, and dried. Application: guaiac paper is applied for the detection ..."

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