thereof thereof /ˌðɛˈrʌv/

adverb

1. () Of or concerning this or that  ( thereof )
   of or concerning this or that
    A problem and the solution thereof
   a problem and the solution thereof
   
2. From that circumstance or source  ( thence , thereof , therefrom )
   from that circumstance or source
    Atomic formulas and all compounds thence constructible
   atomic formulas and all compounds thence constructible
    A natural conclusion follows thence
   a natural conclusion follows thence
    Public interest and a policy deriving therefrom
   public interest and a policy deriving therefrom
    Typhus fever results therefrom
   typhus fever results therefrom