Definition of Tannins
1. Noun. (plural of tannin) ¹
¹ Source: wiktionary.com
Definition of Tannins
1. tannin [n] - See also: tannin
Medical Definition of Tannins
1. Any of a broad group of plant-derived phenolic compounds characterised by their ability to precipitate proteins. Some are more toxic than others, depending on their source. Those derived from nutgalls are believed to be carcinogens, while those found in tea and coffee may be virtually nontoxic. (12 Dec 1998)
Click the following link to bring up a new window with an automated collection of images related to the term: Tannins Images
Lexicographical Neighbors of Tannins
Literary usage of Tannins
Below you will find example usage of this term as found in modern and/or classical literature:
1. Commercial Organic Analysis: A Treatise on the Properties, Proximate by Alfred Henry Allen, Henry Leffmann (1900)
"Hence the acetate is much to be preferred as a reagent for tannins. ... (2) Iron-bluing tannins with ferric salts give blue to black precipitates or colors. ..."
2. Commercial Organic Analysis: A Treatise on the Properties, Proximate by Alfred Henry Allen (1889)
"Constitution of Natural tannins. From the tanner's point of view, ... The tannins giving a bloom on leather give a blue-black coloration with ferric acetate ..."
3. An Introduction to the Chemistry of Plant Products by Paul Haas, Thomas George Hill (1913)
"tannins AS GLUCOSIDES. At one time it was thought that the tannins were substances of a glucosidic nature and occurred in the plant in combination with a ..."
4. An Introduction to the Chemistry of Plant Products by Paul Haas, Thomas George Hill (1917)
"tannins AS GLUCOSIDES. At one time it was thought that the tannins were substances of a glucosidic nature and occurred in the ..."
5. The Chemistry of Plant Life by Roscoe Wilfred Thatcher (1921)
"CHAPTER VII tannins USING the term in its general application to a group of substances having similar chemical and physical properties, rather than in its ..."
6. Proceedings of the Cambridge Philosophical Society by Cambridge Philosophical Society (1883)
"Under the head of tannins have been grouped a number of bodies which as far as ... Our knowledge as to the chemistry of the tannins has advanced but little ..."
7. Outlines of Industrial Chemistry: A Text-book for Students by Frank Hall Thorp, Warren Kendall Lewis (1916)
"tannins tannins, many of which are used in tanning, are important mordants, ... tannins from different sources are possibly not of the same composition and ..."
8. Allen's Commercial Organic Analysis: A Treatise on the Properties, Modes of by Alfred Henry Allen (1911)
"The tannins are generally but little soluble in dilute sulphuric acid. ... Some tannins are precipitated by tartar emetic and by mineral acids. ..."