éthylecommon nounEtymologyexpandcomposed of the prefix eth- indicating a molecule with two carbon atoms and the suffix -yle.Definition1. A monovalent radical with the semi-developed formula CH3 - CH2 -, which enters into a large number of organic compounds.expandPluraléthylesSee alsoéthylisme (cn.) éthylique (adj.) éthylique (cn.) éthylénique (adj.) éthylène (cn.)