krypton
[krip-ton]
- 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
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for krypton
Contemporary Examples
In Earth One, a revenge-thirsty alien named Tyrell comes to Earth to kill the last son of Krypton.
Since Krypton is dying, Jor-El plots to send his newborn to a far-off planet and settles on earth.
Historical Examples
The evidence for the existence of krypton and xenon is, however, inconclusive.
Astronomical CuriositiesJ. Ellard Gore
The remaining elements of this group—neon, krypton, and xenon—have been obtained from liquid air.
An Elementary Study of ChemistryWilliam McPherson
krypton
- 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
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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
(krĭp′tŏn′)- 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
[krĭp′tŏn′]
- 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.