词根词缀：ophio-, ophi-, ophid-, -ophis; -ophidio, -ophidia

【来源及含义】Greek: snake, snakelike, serpent

【相关词根词缀】 A cross reference of other word family units that are related directly, or indirectly, with: "snakes or other reptiles": angui-; coluber-; herpeto-; reptil-; sauro-.

【同源单词】Carphophis, Hydrophid, Hydrophis, ophic, ophicalcite, Ophicephalidae

词根词缀：thanato-, thanat-, thanas-, -thanasia, -thanasic, -thanatous

【来源及含义】Greek: death, dead

【相关词根词缀】 Related "death, dead; kill" units: -cide; lethal-; mort-; neci-; phono-; necro-.

【同源单词】active euthanasia, aneuthanasia, apothanasia, athanasia, biothanatos, cacothanasia