英语词汇circadian的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

词汇	circadian
词根词缀	词源： coined 1959 from L. circa "about" + diem, acc. sing. of dies "day" (see diurnal). The original use is in circadian rhythm.
随便看	optics optimal optimism optimist optimistic optimize optimsm optimum option optional optometer optometrist optometry opulence opulent opus -or or oracle oracular oral orange Orangemen orangutan orate

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。