1. 
2. 
[syn: thence, therefrom, thereof]
The Collaborative International Dictionary of English v.0.48:
Thereof \There*of"\, adv.
   Of that or this.
   [1913 Webster]
         In the day that thou eatest thereof, thou shalt surely
         die.                                     --Gen. ii. 17.
   [1913 Webster]
WordNet (r) 3.0 (2006):
thereof
    adv 1: of or concerning this or that; "a problem and the
           solution thereof"
    2: from that circumstance or source; "atomic formulas and all
       compounds thence constructible"- W.V.Quine; "a natural
       conclusion follows thence"; "public interest and a policy
       deriving therefrom"; "typhus fever results therefrom" [syn:
       thence, therefrom, thereof]