Ethylene-oxide
noun, Chemistry.
1.
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.
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- Ethylene-series
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; […]
- Ethyl-ether
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.
- Ethyl-group
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.
- Ethmoidal foramen
ethmoidal foramen n. Either of two foramina, anterior and posterior, formed by grooves on either edge of the ethmoidal notch of the frontal bone and by similar grooves on the ethmoid bone.