词根词缀：calci-, calc-, calcane-, calcio-, calco-, calcar-, calx

【来源及含义】Latin: lime, calcium; heel, bone of the tarsus; to tread [derived from calx, calcis, limestone, lime, pebble; from Greek words halix and psephos meaning "small stone, pebble"]

【同源单词】a capite ad calcem, acalculia, astragalocalcanean, calcaneal, calcanean, calcaneitis

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