1. blue channel cat a large catfish of the Mississippi valley
  2. blue channel catfish a large catfish of the Mississippi valley
  3. channel cat freshwater food fish common throughout central United States
  4. bleaching agent an agent that makes things white or colorless
  5. bleaching clay an adsorbent clay that will remove coloring from oils
  6. blue-green algae predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton
  7. bleaching earth an adsorbent clay that will remove coloring from oils
  8. blocking agent a class of drugs that inhibit some biological process
  9. bluish black of black tinged with blue
  10. Pelecanoididae diving petrels
  11. biotechnology the branch of molecular biology that studies the use of microorganisms to perform specific industrial processes
  12. Black English a nonstandard form of American English characteristically spoken by African Americans in the United States
  13. oblique-angled having oblique angles
  14. back-channel via a back channel
  15. back channel an alternative to the regular channels of communication that is used when agreements must be made secretly (especially in diplomacy or government)
  16. vulcanology the branch of geology that studies volcanoes
  17. Black Hand a secret terrorist society in the United States early in the 20th century
  18. belching the forceful expulsion of something from inside
  19. black-and-white lacking hue or shades of grey; part white and part black
  20. black and white not having or not capable of producing colors

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