Projector
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 16:33的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/projector ref] Partly from [https://en.wikipedia.org/wiki/Latin Latin] projector(“perso…”的新页面）
wiktionary
Partly from Latin projector(“person who throws away”); partly directly from project + -or.
etymonline
projector (n.)
1590s, "one who forms a project or projects," agent noun in Latin form from project (v.). In the sense of "camera with a light source for throwing an image on a screen" it is attested from 1884.
