Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A colorless, largely inert gaseous element used chiefly in gas discharge lamps and fluorescent lamps. Atomic number 36; atomic weight 83.80; melting point −157.36°C; boiling point −153.34°C; density 3.733 grams per liter (0°C). cross-reference: Periodic Table.

from The Century Dictionary.

  • noun A chemical element, one of the five recently discovered gaseous constituents of the atmosphere, first obtained by Ramsay and Travers in 1898.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) An inert gaseous element of the argon (noble gas) group, of atomic number 36, occurring in air to the extent of about one volume in a million. It was discovered by Ramsay and Travers in 1898. Boiling point, -152.3° C.; melting point, -156.6° C.; symbol, Kr; atomic weight, 83.8.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A chemical element (symbol Kr) with an atomic number of 36; one of the noble gases.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a colorless element that is one of the six inert gasses; occurs in trace amounts in air

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek krupton, neuter of kruptos, hidden (from its rarity), from kruptein, to hide.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Neuter form of Ancient Greek κρυπτός ("hidden").

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Examples

Comments

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  • Can be spelled with the Periodic Table of Elements symbols: KrYPtON

    December 12, 2006

  • Kr.

    December 16, 2007