cyanoacrylatePronunciation: /ˌsʌɪənəʊˈakrɪleɪt/Definition of cyanoacrylate noun Chemistry any of a class of compounds which are cyanide derivatives of acrylates. They are easily polymerized and are used to make quick-setting adhesives. cyanoacrylate in other Oxford dictionaries Definition of cyanoacrylate in the US English dictionary