Alkoxo

Part of speech: adjective

Definitions

1. A chemical group or ligand containing an oxygen atom singly bonded to an alkyl group, commonly found in coordination and organometallic chemistry
2. An anionic species derived from an alcohol by removal of a hydrogen from the hydroxyl group, where the remaining oxygen is attached to an alkyl substituent
3. Referring to a group in chemistry that consists of an oxygen bonded to an alkyl chain, typically acting as a ligand or functional group in various compounds

Etymology: The ancestor of "alkoxo" is the Arabic "al-kuhl," a fine powder of antimony used as eye cosmetic. European chemists borrowed it as "alcohol," and alchemists later extended the name to any refined essence obtained by distillation. The sense of wine spirit came well after the powder. "Alkyl" is built from "alcohol" plus the suffix "-yl," from Greek "hyle," meaning wood or matter, which chemists adopted as a label for hydrocarbon groups. The "oxo" part comes from oxygen, whose name derives from Greek "oxys," meaning sharp or acid. "Alkoxo" combines these: "alk-" from alkyl, "oxo-" from oxygen, and the "-o" ending that coordination chemistry uses to name anionic ligands bound to a metal.