1. A chemical group or radical consisting of an ethyl group bonded to an oxygen atom, with the formula C₂H₅O–, commonly found in organic compounds and pharmaceuticals.
Usage: chemistry; technical

Examples

• The ethoxyl group is frequently used in the synthesis of various pharmaceutical compounds.
• Ethoxyl substituents can improve the solubility of certain organic molecules.
• Many pesticides contain ethoxyl functional groups in their chemical structure.
• The ethoxyl radical plays an important role in organic chemistry reactions.