Science, Tech, Math › Science Alkoxy Group Definition in Chemistry Share Flipboard Email Print Getty Images / Juan Gartner Science Chemistry Chemical Laws Basics Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated July 08, 2019 An alkoxy group is a functional group containing an alkyl group (carbon and hydrogen chain) bonded to an oxygen atom. Alkoxy groups have the general formula: R-O. An alkoxy group is also known as an alkyloxy group. An alkoxy group bonded to a hydrogen atom is an alcohol.An alkoxy group bonded to another alkyl group is an ether. Examples: The simplest alkoxy group is the methoxy group: CH3O-.