Pms
来自Big Physics
Safin（讨论 | 贡献）2022年4月28日 (四) 16:53的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=pms+etymology&newwindow=1&hl=en ref] late Middle English (denoting the time during which…”的新页面）
late Middle English (denoting the time during which something, especially a disease, runs its course): from Old French periode, via Latin from Greek periodos ‘orbit, recurrence, course’, from peri- ‘around’ + hodos ‘way, course’. The sense ‘portion of time’ dates from the early 17th century.
