- 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.
Origin of krypton
Examples from the Web for krypton
Contemporary Examples of krypton
In Earth One, a revenge-thirsty alien named Tyrell comes to Earth to kill the last son of Krypton.‘Man of Steel’ Is Fun to Watch, But It’s Still a Failure. Here’s Why.
June 15, 2013
Since Krypton is dying, Jor-El plots to send his newborn to a far-off planet and settles on earth.‘Man of Steel,’ New Superman Movie Starring Henry Cavill, Falls Flat
June 11, 2013
Historical Examples of 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
Word Origin for krypton
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.
- A largely inert gaseous element used in gas fluorescent lamps, whose artificial radioisotope is used in diagnostic imaging. Atomic number 36.
- 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.