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Substance may refer to:

  • Substance (Jainism), a term in Jain ontology to denote the base or owner of attributes
  • Chemical substance, a material with a definite chemical composition
  • Matter, anything that has mass and takes up space
  • Substance theory, an ontological theory positing that a substance is distinct from its properties
  • Ousia, term for substance in ancient Greek philosophy

Relating to drugs[edit]

Arts, entertainment, and media[edit]


Other media[edit]


  • Dravya, a term used in Jain texts to refer a substance
  • Homoousion, a Christian term meaning "same substance"
  • Homoiousian, a Christian term meaning "similar substance"

See also[edit]