a colorless, odorless, gaseous, toxic, ring compound, C 2 H 4 O, usually obtained by the oxidation of ethylene: used chiefly in the synthesis of ethylene glycol.
noun, Chemistry. 1. . noun, Chemistry. 1. the homologous series of unsaturated, aliphatic hydrocarbons containing one double bond and having the general formula C n H 2n , as ethylene, H 2 C=CH 2 . noun 1. (chem) the homologous series of unsaturated hydrocarbons that contain one double bond and have the general formula, CnH2n; […]
noun, Chemistry. 1. (def 1). noun 1. a more formal name for ether (sense 1) ethyl ether n. See diethyl ether. ethyl ether See ether.
noun, Chemistry. 1. the univalent group, C 2 H 5 –, derived from ethane.
- Ethmoidal labyrinth
ethmoidal labyrinth n. A mass of air cells with thin bony walls forming part of the lateral wall of the nasal cavity. Also called ectethmoid.