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).
A rare, gaseous chemical element, one of the noble gases, present in very small quantities in air: basically inert, it reacts with fluorine and some other elements under special conditions: symbol, Kr; at. no. 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).
A chemical element (symbol Kr) with an atomic number of 36; one of the noble gases.
Origin of krypton
- Greek krupton neuter of kruptos hidden (from its rarity) from kruptein to hide
From American Heritage Dictionary of the English Language, 5th Edition
- Neuter form of Ancient Greek κρυπτός (kruptos, “hidden”).