词根词缀：bothr-

【来源及含义】Greek: pit, pitted; ditch; grooved

【同源单词】bothrenchyma, bothrium

词根词缀：foss-, fossili-, fossil-, fossor-

【来源及含义】Latin: to dig, digging; dug out, dug up from beneath the surface; ditch, trench

【同源单词】efossion, fossa vesicae biliaris, fossette, fossil, fossil city, fossil energy