1. substantia nigra a layer of deeply pigmented grey matter in the midbrain
  2. substantiating serving to support or corroborate
  3. substantia grisea greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons
  4. substantial real; having a material or factual existence
  5. substantiate establish or strengthen as with new evidence or facts
  6. substantiation the act of validating
  7. substantiative serving to support or corroborate
  8. substantiality the quality of being substantial or having substance
  9. substantialness the quality of being substantial or having substance
  10. substantia alba whitish nervous tissue of the CNS consisting of neurons and their myelin sheaths
  11. substantially to a great extent or degree
  12. substantive having a firm basis in reality and therefore important
  13. substation a subsidiary station where electricity is transformed for distribution by a low-voltage network
  14. substance abuser a person who takes drugs
  15. substituting working as a substitute for someone who is ill or on leave of absence
  16. upstanding meriting respect or esteem
  17. substitution class the class of all items that can be substituted into the same position (or slot) in a grammatical sentence (are in paradigmatic relation with one another)
  18. substitution putting one thing or person in the place of another
  19. subsequent following in time or order
  20. abstention the trait of avoiding some substance or activity