Metargon

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A supposed noble gas, once thought to exist in minute amounts in the atmosphere as a result of a flawed study of density spectra. obsolete, uncountable

Etymology

From meta- + argon.

Related phrases

noble gas

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.