periodic
意味
- 定期的な,周期的な
- ときどき起こる
- 掉尾(とうび)的の
例文
Are you familiar with the periodic table of chemical elements?
元素周期表に詳しかったりする?
語源
英語の原文(Wiktionary)
From French périodique, from Medieval Latin periodicus (“cyclical”), from Latin periodus (“complete sentence, period, circuit”), from Ancient Greek περίοδος (períodos, “cycle, period of time”). By surface analysis, period + -ic.