carbyl
/ˈkɑːbʌɪl/ /ˈkɑːb(ɪ)l/Chemistry
noun
Originally: †a divalent radical =CH or =C, believed to exist in carbyl sulphate and some other compounds (obsolete ). In later use: any radical whose point of attachment to other atoms is a carbon atom (a less specific term than alkyl, aryl, etc.).
Origin
Mid 19th century. From carbo- + -yl, after German Carbyl and French carbyle.