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1. The act of combining things to form a new whole
   - combination, combining

1. Make more intense, stronger, or more marked
   "The efforts were compounded";
   - intensify, heighten, deepen
    
2. Put or add together
   "compound resources";
   - combine
    
3. Calculate principal and interest
    
4. Create by mixing or combining
    
5. Combine so as to form a whole; mix
   "compound the ingredients";
   - combine

Type of: account, add, amalgamate, assemble, calculate, change of integrity, commix [archaic], increase, mingle, mix, piece, put together, set up, tack, tack together, unify

Encyclopedia: Compounding