词根词缀：annul-, anul-

【来源及含义】Latin: ring

【同源单词】annular, annuloaortic, annuloplasty, annulus, anular cartilage, anular ligament

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