Bible Dictionaries
Ethylidene

Webster's Dictionary

An unsymmetrical, divalent, hydrocarbon radical, C2H4 metameric with ethylene but written thus, CH3.CH to distinguish it from the symmetrical ethylene, CH2.CH2. Its compounds are derived from aldehyde. Formerly called also ethidene.

Bibliography Information
Webster, Noah. Entry for 'Ethylidene'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​e/ethylidene.html. 1828.