Webster’s Revised Unabridged Dictionary · 1913
Argon
Ar′gon (är′gŏn), n. [Gr. ἀργόν inactive.] (Chem.) A substance regarded as an element, contained in the atmosphere and remarkable for its chemical inertness. Rayleigh and Ramsay.
Webster’s Revised Unabridged Dictionary · 1913
Ar′gon (är′gŏn), n. [Gr. ἀργόν inactive.] (Chem.) A substance regarded as an element, contained in the atmosphere and remarkable for its chemical inertness. Rayleigh and Ramsay.