n.
Pronunciation: ' är- ˌ gän
Function: noun
Etymology: Greek, neuter of argos idle, lazy, from a- + ergon work; from its relative inertness ― more at WORK
Date: 1894
: a colorless odorless inert gaseous element found in the air and in volcanic gases and used especially in welding, lasers, and electric bulbs ― see ELEMENT table