the divalent hydrocarbon radical CH, normally existing only in combination
Origin of methyleneFrench méthylène ; from Classical Greek methy, wine (see mead) + hyl?, wood
A bivalent hydrocarbon group, CH2, a component of unsaturated hydrocarbons.
Origin of methyleneFrench méthylène : Greek methu, wine; see medhu- in Indo-European roots + Greek h&umacron;l&emacron;, wood, substance.
(countable and uncountable, plural methylenes)
French mÃ©thylÃ¨ne, from Ancient Greek Î¼ÎÎ¸Ï… (methy, “wine") + á½•Î»Î· (hylÄ“, “wood").