English word onconeuronal comes from English neuronal (Of, or relating to a neuron.), English onco- (Pertaining to tumors.)

Detailed word origin of onconeuronal

Dictionary entry	Language	Definition
neuronal	English (eng)	Of, or relating to a neuron.
onco-	English (eng)	Pertaining to tumors.
onconeuronal	English (eng)	Related to cancer and to neurological syndromes.

Words with the same origin as onconeuronal