wherein

[adv] - in regard to which 2. [adv] - in the course or during which 3. [adv] - in which 4. [adv] - in what
Found on http://www.webdictionary.co.uk/definition.php?query=wherein

Wherein

Where·in' adverb 1. In which; in which place, thing, time, respect, or the like; -- used relatively. « Her clothes wherein she was clad.» Chaucer. « There are times wherein a man ought to be cautious as well as innocent.» Swift. 2...
Found on http://www.encyclo.co.uk/webster/W/29

Wherein

• (adv.) In what; -- used interrogatively. • (adv.) In which; in which place, thing, time, respect, or the like; -- used relatively.
Found on http://thinkexist.com/dictionary/meaning/wherein/
No exact match found