| 释义 | 
		xy·lyl \ˈzīlə̇l\ noun (-s) Etymology: International Scientific Vocabulary xyl- + -yl  : any of several isomeric univalent radicals C8H9 derived from the three xylenes by removal of a hydrogen atom; especially  : a radical of the formula (CH3)2C6H3−; dimethyl-phenyl — compare tolyl |