herein

from WordNet (r) 3.0 (2006)

herein
    adv 1: in this place or thing or document; "I shall discuss the
           question herein"

from The Collaborative International Dictionary of English v.0.48

Herein \Here*in"\, adv. [AS. h?rinne.]
   In this.
   [1913 Webster]

         Herein is my Father glorified, that ye bear much fruit.
                                                  --John xv. 8.
   [1913 Webster]