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There are 2 twelve-letter words beginning with TETRAHEDR

TETRAHEDRITEtetrahedrite n. (Mineralogy) A complex ore of copper, a mixed sulfide of copper, iron, zinc, silver and antimony.
TETRAHEDRITE n. native sulphide of antimony, iron, and copper, forming a series with tennantite and typically occurring as tetrahedral crystals.
TETRAHEDRONStetrahedrons n. Plural of tetrahedron.
TETRAHEDRON n. a polyhedron that has four faces.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 3 words
  • Scrabble in French: no word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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