- a colorless, odorless, chemically inactive, monatomic, gaseous element that, because of its inertness, is used for filling fluorescent and incandescent lamps and vacuum tubes. Symbol: Ar; atomic number: 18; atomic weight: 39.948.
Origin of argon
Examples from the Web for argon
Historical Examples of argon
What property of magnesium was taken advantage of in the isolation of argon?An Elementary Study of Chemistry
The investigation of argon led to the discovery of some of the others.Meteorology
Charles Fitzhugh Talman
I could scarce believe my eyes when she appeared as the "wife of Argon."Pencillings by the Way
N. Parker Willis
Of these, argon and its allies were the last to be definitely isolated.
Tonight you looked very suspicious when you left Argon City.B-12's Moon Glow
Charles A. Stearns
- an extremely unreactive colourless odourless element of the rare gas series that forms almost 1 per cent (by volume) of the atmosphere. It is used in electric lights. Symbol: Ar; atomic no: 18; atomic wt: 39.948; density: 1.7837 kg/m³; freezing pt: –189.3°C; boiling pt: –185.9°C
Word Origin for argon
- A colorless, inert gaseous element constituting approximately one percent of the earth's atmosphere, used in electric bulbs and fluorescent tubes and in lasers used for opthalmic procedures. Atomic number 18.
- A colorless, odorless element in the noble gas group. Argon makes up about one percent of the atmosphere. It is used in electric light bulbs, fluorescent tubes, and radio vacuum tubes. Atomic number 18; atomic weight 39.948; melting point -189.2°C; boiling point -185.7°C. See Periodic Table.