Demo
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 21:46的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=demo+etymology&newwindow=1&hl=en ref] early 20th century: abbreviation of demonstration a…”的新页面）
early 20th century: abbreviation of demonstration and demonstrate.
wiktionary
Clipping of demonstration and various other words beginning with "demo-".
Clipping of demonstrate.
Clipping of demolish.
etymonline
demo (n.)
"music recording given out for promotional purposes," by 1958 in Billboard magazine headlines and advertisements, short for demonstrationdisk. The word was used earlier to mean "a public political demonstration" (1936).
