巯基 qiújī mercapto group Origin Definitions Defs Strokes Stroke Words Sentences Sents 巯 巰 qiú hydrosulfuryl (bound form) hydrosulfuryl; specifically used in names for the thiol group 巯基 qiújī基 jī noun radical (bound form) a group of atoms that behave as a single unit in a chemical reaction; a radical