词根词缀：onych-, onycho-, ony-, -onychia, -onychial, -onychium, -onyx-

【来源及含义】Greek: claw, nail; fingernails, toenails

【相关词根词缀】A cross reference, directly or indirectly, involving a word unit meaning "nail (finger, toe); claw": ungu-.

【同源单词】acronychous, acronyx, anonychia, anonychosis, Baryonyx Walkeri, dolichonychia

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