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16 Subcategories

• body substance go
  the substance of the body
  
• protoplasm, living substance go
  the substance of a living cell (including cytoplasm and nucleus)
  
• chemistry go
  the chemical composition and properties of a substance or object
  
• material, stuff go
  the tangible substance that goes into the makeup of a physical object
  
• phlogiston go
  a hypothetical substance once believed to be present in all combustible materials and to be released during burning
  
• mixture go
  (chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)
  
• atom go
  (physics and chemistry) the smallest component of an element having the chemical properties of the element
  
• element, chemical element go
  any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
  
• activator go
  (biology) any agency bringing about activation
  
• substrate go
  the substance that is acted upon by an enzyme or ferment
  
• element go
  one of four substances thought in ancient and medieval cosmology to constitute the physical universe
  
• medium go
  an intervening substance through which something is achieved
  
• medium go
  (biology) a substance in which specimens are preserved or displayed
  
• fluid go
  a substance that is fluid at room temperature and pressure
  
• volatile go
  a volatile substance
  
• essence go
  any substance possessing to a high degree the predominant properties of a plant or drug or other natural product from which it is extracted