ˌsīə(ˌ)nōˈhīdrə̇n noun
also cy·an·hy·drin ˌsīˌanˈ-, -īənˈ-
( -s )
Etymology: International Scientific Vocabulary cyan- + -hydrin
: any of a class of organic compounds containing both cyano and alcoholic hydroxyl groups usually made by the addition of hydrogen cyanide to an aldehyde or ketone : a hydroxy nitrile ; especially : an alpha-hydroxy nitrile