氪气石 kèqìshí kryptonite Origin Definitions Defs Strokes Stroke Words Sentences Sents 氪 kè noun krypton the chemical element krypton; a colorless and odorless chemical element that is one of the noble gases气 氣 qì noun gas gas; air; the state of matter that is neither liquid nor solid石 shí noun stone rock; stone; (bound form) made of stone; rock-like