herein

1 ENTRIES FOUND:
herein /hiɚˈɪn/ adverb
herein
/hiɚˈɪn/
adverb
Britannica Dictionary definition of HEREIN
formal
1 
: in this book, document, etc.
2 
: in this statement, fact, or detail — used to introduce something that is related to the main subject and that is usually followed by an explanation