出典:Wiktionary
出典:『Wiktionary』 (2026/07/16 03:09 UTC 版)
From a fictional radioactive element, kryptonite, that has a detrimental effect on the otherwise invulnerable character Superman. Formed from Superman's home planet Krypton + -ite, which was named after the chemical element krypton.
kryptonite (usually uncountable, plural kryptonites)
kryptonite (third-person singular simple present kryptonites, present participle kryptoniting, simple past and past participle kryptonited)
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