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krypton

[krip-ton]
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noun Chemistry.
  1. an inert, monatomic gaseous element, present in very small amounts in the atmosphere: used in high-power, tungsten-filament light bulbs. Symbol: Kr; atomic weight: 83.80; atomic number: 36.
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Origin of krypton

1895–1900; < Greek kryptón, neuter of kryptós hidden, secret; see crypt
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for krypton

krypton

noun
  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
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Word Origin

C19: from Greek, from kruptos hidden; see crypt
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for krypton

n.

inert gaseous element, 1898, coined by its discoverers (Sir William Ramsay and Morris W. Travers) from Greek krypton, neuter of adjective kryptos "hidden" (see crypt); so called because it was so difficult to find.

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Online Etymology Dictionary, © 2010 Douglas Harper

krypton in Medicine

krypton

(krĭptŏn′)
n. Symbol Kr
  1. A largely inert gaseous element used in gas fluorescent lamps, whose artificial radioisotope is used in diagnostic imaging. Atomic number 36.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

krypton in Science

krypton

[krĭptŏn′]
Kr
  1. A colorless, odorless element in the noble gas group. It is used in certain fluorescent lamps and photographic flash lamps. Atomic number 36; atomic weight 83.80; melting point -156.6°C; boiling point -152.30°C; density 3.73 grams per liter (0°C). See Periodic Table.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.