词根词缀：exo-, ex-

【来源及含义】Greek: outer, outside, external; used as a prefix

【同源单词】exobiology, exobiotic, exocardia, exocardiac, exocardial, exocarp

词根词缀：skeleto-, skelet-, skele-

【来源及含义】Greek > Latin: dried up, withered, mummy; the bony and some of the cartilaginous framework of the body of animals; including humans

【同源单词】chondroskeleton, dermaskeleton, dermoskeleton, ectoskeleton, endoskeletal, endoskeleton