词根词缀：anu-, ana-, an-, anal-, ano-

【来源及含义】Latin: ring, an iron ring for the feet; circle; (so called because of its form); usually the posterior opening of the alimentary canal through which undigested food is voided; the anus

【相关词根词缀】 A cross reference of other word family units that are related directly, indirectly, or partially with: "opening, hole, cavity, tract, tube": alveolo-; antro-; celo-; coelio-; concho-; fenestra-; hernio-; hiat-; meato-; ora-; parieto-; poro-; pyl-, pyle-; pylor-; sphinctero-; splanchn-; stomato-; syringo-; uretero-; urethro-; vagino-; ventricul-.

【同源单词】anoderm, anoperineal, anophony, anorectal, anorectocolonic, anorectum

词根词缀：spasmo-, spasm-, spas-

【来源及含义】Greek > Latin: draw, tear, rend, pull; tension, convulsion; sudden, involuntary contractions

【同源单词】algospasm, anesthetospasm, angiospasm, anospasm, antispasmodic, antispastic