Argon



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.
Historical Examples

These gases agree with argon in respect of the ratio of the specific heats and in being non-oxidizable under the electric spark.
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 Various

The investigation of argon led to the discovery of some of the others.
Meteorology Charles Fitzhugh Talman

Joining forces with Ramsay, the observed discrepancies were hunted down, and in 1894 the discovery of argon was announced.
Appletons’ Popular Science Monthly, May, 1900 Various

I could scarce believe my eyes when she appeared as the “wife of argon.”
Pencillings by the Way N. Parker Willis

The oxygen or nitrogen atom never rests until it has sought out a fellow, but the argon atom declines all fellowship.
A History of Science, Volume 5(of 5) Henry Smith Williams

Tonight you looked very suspicious when you left argon City.
B-12’s Moon Glow Charles A. Stearns

Within the airdrome which covers argon City the buildings are loosely constructed, even as they are on Earth.
B-12’s Moon Glow Charles A. Stearns

Some may already know that there is at least a third thing, argon.
The Voice of Science in Nineteenth-Century Literature Various

argon, the eldest son of Annir, tilted with him and overthrew him.
Character Sketches of Romance, Fiction and the Drama, Vol 1 The Rev. E. Cobham Brewer, LL.D.

argon, ar′gon, n. a constituent element of our atmosphere, discovered in 1894 by Rayleigh and Ramsay.
Chambers’s Twentieth Century Dictionary (part 1 of 4: A-D) Various

noun
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
n.

chemical element, 1894, Modern Latin, from Greek argon, neuter of argos “lazy, idle, not working the ground, living without labor,” from a- “without” (see a- (3)) + ergon “work” (see urge (v.)). So called by its discoverers, Baron Rayleigh and Sir William Ramsay, for its inert qualities.

argon ar·gon (är’gŏn’)
n.
Symbol Ar
A colorless, inert gaseous element constituting [approx] one percent of Earth’s atmosphere, used in electric bulbs and fluorescent tubes and as an inert gas shield in arc welding. Atomic number 18; atomic weight 39.948; melting point -189.3°C; boiling point -185.9°C.
argon
(är’gŏn’)
Symbol Ar
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.

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