alkyl
noun [ C ] chemistry specialized uk/ˈæl.kɪl/ us/ˈæl.kɪl/
烷基，烃基
a group of atoms that consist of an alkane that has had one hydrogen atom removed; often used before another noun in the name of chemical substances
an alkyl iodide 一种碘代烷
an alkyl ammonium salt 一种烷基季铵盐