'Krypton' definitions:

Definition of 'krypton'

From: WordNet
noun
A colorless element that is one of the six inert gasses; occurs in trace amounts in air [syn: krypton, Kr, atomic number 36]

Definition of 'Krypton'

From: GCIDE
  • Krypton \Kryp"ton\ (kr[i^]p"t[o^]n), n. [NL., fr. Gr. krypto`n, neut. of krypto`s hidden.] (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[deg] C.; melting point, -156.6[deg] C.; symbol, Kr; atomic weight, 83.8. [Webster 1913 Suppl.]

Definition of 'krypton'

From: GCIDE
  • Noble \No"ble\, a. [Compar. Nobler; superl. Noblest.] [F. noble, fr. L. nobilis that can be or is known, well known, famous, highborn, noble, fr. noscere to know. See know.]
  • 1. Possessing eminence, elevation, dignity, etc.; above whatever is low, mean, degrading, or dishonorable; magnanimous; as, a noble nature or action; a noble heart. [1913 Webster]
  • Statues, with winding ivy crowned, belong To nobler poets for a nobler song. --Dryden. [1913 Webster]
  • 2. Grand; stately; magnificent; splendid; as, a noble edifice. [1913 Webster]
  • 3. Of exalted rank; of or pertaining to the nobility; distinguished from the masses by birth, station, or title; highborn; as, noble blood; a noble personage. [1913 Webster]
  • Note: Noble is used in the formation of self-explaining compounds; as, noble-born, noble-hearted, noble-minded. [1913 Webster]
  • Noble gas (Chem.), a gaseous element belonging to group VIII of the periodic table of elements, not combining with other elements under normal reaction conditions; specifically, helium, neon, argon, krypton, xenon, or radon; also called inert gas.
  • Noble metals (Chem.), silver, gold, and platinum; -- so called from their resistance to oxidation by air and to dissolution by acids. Copper, mercury, aluminium, palladium, rhodium, iridium, and osmium are sometimes included. [1913 Webster]
  • Syn: Honorable; worthy; dignified; elevated; exalted; superior; sublime; great; eminent; illustrious; renowned; stately; splendid; magnificent; grand; magnanimous; generous; liberal; free. [1913 Webster]

Definition of 'Krypton'

From: Elements
  • Symbol: Kr
  • Atomic number: 36
  • Atomic weight: 83.80
  • Colorless gaseous element, belongs to the noble gases. Occurs in the air, 0.0001% by volume. It can be extracted from liquid air by fractional distillation. Generally not isolated, but used with other inert gases in fluorescent lamps. Five natural isotopes, and five radioactive isotopes. Kr-85, the most stable radioactive isotope, has a half-life of 10.76 years and is produced in fission reactors. Practically inert, though known to form compounds with fluorine.