词根词缀：cav-, cavo-, cava-, cavi-, cavern-

【来源及含义】Latin: hollow, a hollow place; chasm; prison

【相关词根词缀】 Related "cave, cavern" word sources: speleo-; spelunc-, spelunk-; stalac-, stalag-; troglo--.

【同源单词】angiocavernoma, biconcave, bulbospongiosus, cage, cajole, cajolement

词根词缀：peri-

【来源及含义】Greek: around, enclosing, surrounding, about, near, close; often used as a prefix

【相关词根词缀】 Related "around, round, surrounding" units: ambi-; ampho-; circ-; circum-; cyclo-, -cycle; gyro-.

【同源单词】abdominal fascia, adominoperineal, aeroperitonia, anoperineal, colpoperineoplasty, colpoperineorrhaphy