- 氢氧基 qīngyǎngjī hydroxyl group(chemistry) a chemical group consisting of one hydrogen atom and one oxygen atom; also called [[羟基|羥基|qiang3 ji1]] or [[氢氧根|氫氧根|qing1 yang3 gen1]]
- 乙氧基 yǐyǎngjī ethoxyethoxy group in chemistry
- 烷氧基 wányǎngjī alkoxy(chemistry) alkoxy group; a functional group containing an alkyl group bonded to oxygen
- 甲氧基 jiǎyǎngjī methoxymethoxy group in organic chemistry
- 苯氧基 běnyǎngjī phenoxy(chemistry) phenoxy group
