Indicator
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 08:04的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/indicator ref] From [https://en.wikipedia.org/wiki/Late_Latin Late Latin] indicātor(“o…”的新页面）
wiktionary
From Late Latin indicātor(“one who points out”), from Latin indicō(“point out”); see indicate.
etymonline
indicator (n.)
1660s, "that which indicates or points out," from Late Latin indicator, agent noun from indicare "to point out, show" (see indication). As a finger muscle, from 1690s. As a steam-cylinder's pressure gauge, 1839. As a device on a motor vehicle to signal intention to change direction, 1932.
