Black diamond

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Hematite. countable, uncountable
  2. 2
    an inferior dark diamond used in industry for drilling and polishing wordnet
  3. 3
    Anthracite. countable, uncountable
  4. 4
    Carbonado, a natural diamond that is black in color. countable, uncountable
  5. 5
    A black synthetic diamond, specifically a CVD polycrystalline diamond or HPHT polycrystalline compact diamond. countable, uncountable
Show 3 more definitions
  1. 6
    Boron carbide. countable, uncountable
  2. 7
    A member of the new affluent black middle class in South Africa, characterized by conspicuous consumption. South-Africa, countable, derogatory, uncountable
  3. 8
    A symbol representing a steep and relatively difficult trail, typically of a 40% gradient or above. countable, uncountable