wherein

1 wherein /weɚˈɪn/ adverb
1 wherein
/weɚˈɪn/
adverb
Britannica Dictionary definition of WHEREIN
formal
2 wherein /weɚˈɪn/ conjunction
2 wherein
/weɚˈɪn/
conjunction
Britannica Dictionary definition of WHEREIN
formal
1 
b  : during which
2