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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.]


(Pharmacology) a white soluble bitter-tasting crystalline glycoside extracted from bitter almonds and stone fruits such as peaches and apricots. Formula: C6H5CHCNOC12H21O10


(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]
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
References in periodicals archive ?
Less amygdalin inhibition by the PFC is also found in adults who were abused as children (De Bellis et al.
2%) patients used specific dietary supplements (products containing beta-glucan, amygdalin, arabynoxylan, soursoup, chlorophyll, quinones, and/or fungal extracts); none of the patients underwent acupuncture; 5 (1.
If the seed is chewed or otherwise broken, human or animal enzymes come into contact with the amygdalin and effectively cut off the sugar part of the molecule.
In Prunus, enzymes associated with this activity include amygdalin hydrolase, prunasin hydrolase, and mandelonitrile lyase (Swain et al.
It contains amygdalin, hydrocyanic acid, and considerable amounts of phytosterol, which is composed of beta sitosterol and campesterol (1)
G) Arginine dihydrolase production (ADH) Lysine decarboxylase Variable production(LDC) Ornithine decarboxylase Variable production(ODC) Citrate utilization (CIT) -- H2S production(H2S) -- Urease production(URE) -- Tryptophane deaminase -- production (TDA) Indole production(IND) Variable Acetoin production(VP) -- Gelatinase production(CEL) Variable Acid from glucose(GLU) Variable Acid from manitol(MAN) Variable Acid from inositol(INO) -- Acid from Sorbitol(SOR) -- Acid from rhamnose(RHA) -- Acid from sucrose(SAC) -- Acid from melibiose(MEL) -- Acid from amygdalin (AMY) + Acid from arabinose (ARA) -- Cytochrome oxidase (OX) +
Scientific evidence continues to accumulate for the efficacy of the apricot kernel-derived chemical amygdalin (Laetrile) in cancer.
It also contains the enzyme emulsin which in the presence of water acts on soluble glycosides amygdalin and prunasin [13] yielding glucose cyanide and the essential oil of bitter almonds which is nearly pure benzaldehyde.
But to Moss' surprise, numerous letters were written in regard to a substance called amygdalin, or, more popularly, laetrile.
However, the seeds are supposed to be spitted out, as they contain a substance called amygdalin, which can release a small amount of hydrogen cyanide when digested.
The cyanogenic glucoside amygdalin is found in bitter almonds and commonly causes cyanide poisoning.