1. introducing an ethyl group (C₂H₅) into a molecule or compound, typically in a chemical reaction
Usage: chemistry; present participle of ethylate

Examples

• The chemist is ethylating the alcohol to produce the desired ester.
• Ethylating the compound increases its reactivity in subsequent reactions.
• The process of ethylating benzene requires a catalyst.
• They were ethylating the amine to modify its chemical properties.
• Ethylating agents are commonly used in organic synthesis.