manganese nodule

noun

geology a small irregular concretion found on deep ocean floors having high concentrations of certain metals, esp manganese

Nearby words

  1. mangaluru,
  2. mangan-,
  3. manganate,
  4. manganese,
  5. manganese bronze,
  6. manganese spar,
  7. manganese steel,
  8. manganese violet,
  9. manganic,
  10. manganic acid

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