What does cyanogenic mean?
"Cyanogenic" is an adjective describing any plant, foodstuff, or organism that contains compounds capable of breaking down into hydrogen cyanide. The word derives from Greek roots — "kyanos," meaning dark blue (the source of "cyanide"), combined with "-genic," meaning producing or generating. It is a specialist term most commonly found in botany, agriculture, food science, and toxicology, where it flags plants with an inherent chemical defence: when their tissue is damaged by chewing, crushing, or drought stress, enzymes convert stored compounds such as amygdalin or linamarin into poisonous cyanide gas. Well-known cyanogenic species include bitter almonds, apricot kernels, flaxseed, sorghum, lima beans, and especially cassava, a staple crop across much of Africa and South America whose toxicity depends heavily on variety and preparation method. Understanding which foods are cyanogenic matters for food safety, since traditional techniques like soaking, fermenting, and drying exist largely to reduce this hazard before eating.
adjectiveCapable of producing or releasing hydrogen cyanide, especially when the plant or substance containing it is crushed, damaged, or metabolized.
- (of a plant, food, or other organic substance) containing compounds that can be broken down to release hydrogen cyanide.
"Cassava is a cyanogenic crop that must be carefully processed to remove its naturally occurring toxins before consumption."
"Bitter almonds are notoriously cyanogenic and were once used as a source of the poison itself."
"Farmers in regions where cassava is a staple have long developed soaking and drying techniques specifically to reduce its cyanogenic properties."
Some of the world's most important staple foods — cassava, lima beans, even bamboo shoots — are quietly cyanogenic, meaning they can generate cyanide if prepared incorrectly.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cyanogenic
"Cyanogenic" combines two elements of Greek origin: "kyanos," meaning dark-blue enamel or lapis lazuli, which also gave rise to "cyanide" and words like "cyanosis" and "cyanobacteria," and "-genic," from "genēs" (born, produced), indicating something that generates or produces a specified substance. The compound was formed in the context of nineteenth-century chemistry, after Prussian blue and related pigments had led chemists to isolate what became known as prussic acid (hydrogen cyanide) from plant materials. Its closest relatives in modern English are other "-genic" adjectives built on chemical or biological roots, such as "carcinogenic" and "photogenic."
How cyanogenic is actually used
A technical term most often encountered in botany, toxicology, agriculture, and food science rather than everyday speech. It carries a neutral scientific register but inherently implies potential toxicity, so it tends to appear in discussions of food safety, poisoning, and plant defence mechanisms.
Easily confused with cyanogenic
'Carcinogenic' means capable of causing cancer, while 'cyanogenic' means capable of producing cyanide.