a colorless, odorless chemical element, one of the noble gases, constituting nearly 1% of the atmosphere: it is used in incandescent lightbulbs, electron tubes, welding, etc.: symbol, Ar; at. no. 18
Origin of argonGr, neuter of argos, inert, idle ; from a-, without + ergon, work
A colorless, odorless, inert gaseous element constituting approximately one percent of the earth's atmosphere, from which it is commercially obtained by fractionation for use in electric light bulbs, fluorescent tubes, and radio vacuum tubes and as an inert gas shield in arc welding. Atomic number 18; atomic weight 39.948; melting point −189.36°C; boiling point −185.85°C. See Periodic Table.
Origin of argonFrom Greek argon, neuter of argos, idle, inert : a-, without; see a–1 + ergon, work; see werg- in Indo-European roots.
- A chemical element (symbol Ar) with an atomic number of 18.
From Ancient Greek ἀργόν (argon), neuter of ἀργός (argos, “idle, lazy”), because of its inertness.