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：spin-, spino-, spini-

【来源及含义】Latin: thorn, prickle; by extension, "backbone", the spinal cord

【同源单词】anospinal, anterospinal, cerebrospinal, cervicispinal, costispinal, dorsispinal