ˈiləˌdēn, _ə̇l- noun suffix
( -s )
Etymology: International Scientific Vocabulary -yl + -idene
: bivalent radical derived especially from a saturated hydrocarbon by removal of two hydrogen atoms from the same carbon atom or by removal of the oxygen atom of an aldehyde
citr ylidene
— in the system adopted by the International Union of Pure and Applied Chemistry — compare -idene