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单词 krypton
释义

WordReference Random House Learner's Dictionary of American English © 2024
kryp•ton /ˈkrɪptɑn/USA pronunciation   n. 
  1. Chemistry[uncountable] a gaseous element, present in very small amounts in the atmosphere, that does not react easily with other elements.

WordReference Random House Unabridged Dictionary of American English © 2024
kryp•ton  (krip′ton),USA pronunciation n. [Chem.]
  1. Chemistryan inert, monatomic gaseous element, present in very small amounts in the atmosphere: used in high-power, tungsten-filament light bulbs. Symbol: Kr;
    at. wt.: 83.80;
    at. no.: 36.
  • Greek kryptón, neuter of kryptós hidden, secret; see crypt
  • 1895–1900

Collins Concise English Dictionary © HarperCollins Publishers::
krypton /ˈkrɪptɒn/ n
  1. an inert gaseous element occurring in trace amounts in air and used in fluorescent lights and lasers. Symbol: Kr; atomic no: 36; atomic wt: 83.80; valency: 0; density: 3.733 kg/m³; melting pt: –157.37°C; boiling pt: –153.23±0.10°C
Etymology: 19th Century: from Greek, from kruptos hidden; see crypt
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更新时间：2025/7/23 10:17:00