argon

[ahr-gon]

noun Chemistry.

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

1890–95; < Greek, neuter of argós inactive, not working, idle, contraction of aergós equivalent to a- a-⁶ + érg(on) work + -os adj. suffix

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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
William McPherson
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.
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 8
Various
Tonight you looked very suspicious when you left Argon City.
B-12's Moon Glow
Charles A. Stearns

British Dictionary definitions for argon

argon

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

Word Origin for argon

C19: from Greek, from argos idle, inactive, from a- 1 + ergon work

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for argon

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 in Medicine

argon

[är′gŏn′]

n. Symbol Ar

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.

argon in Science

argon

[är′gŏn′]

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.