tephroite

US:USA pronunciation: respellingUSA pronunciation: respelling(tefrō īt′)


WordReference Random House Unabridged Dictionary of American English © 2026
teph•ro•ite  (tefrō īt′),USA pronunciation n. 
  1. Mineralogya mineral, silicate of manganese, Mn2SiO4, occurring in orthorhombic crystals.
  • Greek tephró(s) ash gray + German -it -ite1
  • German Tephroit
  • 1865–70


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