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A glycoside, C20H27NO11, commonly found in seeds and other plant parts of many members of the rose family, such as kernels of the apricot, peach, and bitter almond, which breaks down into hydrocyanic acid, benzaldehyde, and glucose.

[From Late Latin amygdalus, almond tree, from Greek amygdalos.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Pharmacology) a white soluble bitter-tasting crystalline glycoside extracted from bitter almonds and stone fruits such as peaches and apricots. Formula: C6H5CHCNOC12H21O10
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(əˈmɪg də lɪn)

a white, bitter-tasting, water-soluble, glycosidic powder, C20H27NO11, used chiefly as an expectorant.
[1645–55; < Latin amygdal(a) almond (from which it is obtained) + -in1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.amygdalin - a bitter cyanogenic glucoside extracted from the seeds of apricots and plums and bitter almonds
laetrile - a substance derived from amygdalin; publicized as an antineoplastic drug although there is no supporting evidence
glucoside - a glycoside derived from glucose
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The report said that it was the Vitamin B17 in Cassava that did the trick and that eating boiled cassava can cure all forms of cancer.
Khoury has now turned vegan, cut out sugar and takes a dose of Vitamin B17, which was advised by alternative medicine therapists.
Amygdalin (also known as Laetrile or vitamin B17) is a poisonous cyanogenic glycoside substance found naturally in many plants, including raw nuts such as bitter almonds and the pips of many fruits (particularly apricot pips or kernels).
There's no such thing as Vitamin B17. However, some people have given that name to laetrile, an extract from the pips and stones of fruit, in particular apricot stones.
It is amazing that although the scientific community rejected the claim that laetrile (the cyanogenic glycoside, amygdalin) is a vitamin, a broad section of the public still accepts it as "vitamin B17." A Google search for vitamin B17 returns over 400,000 hits.
Paul Reid insists that the "cancer-killing" properties in the kernels, rich in vitamin B17, and a strict vegetarian diet have cured him, despite the doctors telling him he would live for just five more years.
Vitamin B17, amygdalin or laetrile, though little known by the general public, has become a subject of debate for cancer victims and natural healing practitioners on the one hand and medical professionals, researchers and special interest groups on the other.