词根词缀：costo-, cost-, costi-

【来源及含义】Latin: rib, ribs; side; coast

【同源单词】accost, accosted, acuticostal, chondrocostal, coast, costa

词根词缀：xipho-, xiphi-, xiph-

【来源及含义】Greek: sword

【同源单词】xiphisternal, xiphisternum, xiphocostal, xiphodynia, xiphoid, xiphoid process