柯林斯词典arteriole /ɑːˈtɪərɪˌəʊl/ 1. N any of the small subdivisions of an artery that form thin-walled vessels ending in capillaries 小动脉[anatomy] 返回 arteriole剑桥词典a very small artery that often joins onto a capillary 小动脉 返回 arteriole