Kryptonite
来自Big Physics
Safin（讨论 | 贡献）2022年4月29日 (五) 02:13的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=kryptonite+etymology&newwindow=1&hl=en ref] 1940s: from Krypton, the name of Superman's h…”的新页面）
1940s: from Krypton, the name of Superman's home planet (kryptonite is usually depicted as a green mineral that came to earth from Krypton, following its destruction).
wiktionary
From a fictional radioactive element, kryptonite, that has a detrimental effect on the otherwise invulnerable character Superman. Apparently formed as krypton(“a chemical element, Kr”) + -ite.
etymonline
kryptonite (n.)
fictional substance in the "Superman" series, where it weakens the otherwise invulnerable hero, 1943; perhaps from elements of krypton (which is a gas) + meteorite.
