melanothallite

M3E1L1A1N1O1T1H4A1L1L1I1T1E1

noun

An orthorhombic-dipyramidal mineral containing chlorine, copper, and oxygen.

OriginAncient Greek μέλᾱς →
Scrabble 19
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Meanings

nounmelanothallite (uncountable)
  1. uncountablechemistryAn orthorhombic-dipyramidal mineral containing chlorine, copper, and oxygen.

Origin

  1. Ancient Greekμέλᾱς“black”
  2. Englishmelanothallite

From Ancient Greek μέλᾱς (mélās, “black”) and θαλλός (thallós, “young/green twig”), because when the mineral is exposed, it turns from black to green.

More words from Ancient Greek

Full word history & related roots →
Cite this entry
APA

melanothallite. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/melanothallite

MLA

“melanothallite.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/melanothallite. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “melanothallite,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/melanothallite.

Source: melanothallite on Wiktionary, CC BY-SA 4.0.