Recent Examples of krypton from the Web
Alas, the fuddy-duddies of international mineral nomenclature insist that, since the stone doesn’t actually contain the real-world element krypton, it can’t be officially called kryptonite.
The new model suggests our home planet contains significantly more sodium, potassium, chlorine, zinc, strontium, fluorine, gallium, rubidium, niobium, gadolinium, tantalum, helium, argon, and krypton than previously believed.
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KRYPTON Defined for English Language Learners
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