词根词缀：-or; -our

【来源及含义】Latin: a suffix; state of, result of; he who, that which

【同源单词】abdicator, abductor, ablator, acanthor, accelerator, adductor

词根词缀：roti-, rot-

【来源及含义】Latin: wheel [turn]

【同源单词】circumrotate, circumrotation, circumrotatory, contrarotation, dextrorotation, dextrorotatory