| 词汇 | opal |
| 词根词缀 | 词源： 1590s, from Fr. opalle, from L. opalus (Pliny), supposedly from Gk. opallios, possibly ultimately from Skt. upala-s "gem, precious stone." Used in M.E. in Latin form (late 14c.). |
| 随便看 |
英语词根词缀词典收录了31503条英语词根词缀词条，基本涵盖了全部常用英语词汇的词根、词缀及词根记忆法解析，是记忆英语词汇的必备工具。