词根词缀：reno-, ren-, reni-

【来源及含义】Latin: kidney or kidneys

【同源单词】renal, renarium, renicapsule, renicardiac, reniculi, reniculus

词根词缀：-ulus, -olus, -ulum, -ola

【来源及含义】Latin: suffix; little, small

【同源单词】abaculus, acaulus, altocumulus, annulus, anulus, anulus ciliaris