1. a person who is excessively concerned with looking up minor details and rules on wikis (notably Wikipedia) or with displaying their internet-learning, esp. when it has just been learned.
2. a person who adheres rigidly to the content of wiki pages without regard to common sense.
3. a person who is v. ostentatious or condescending when engaged in the above behavior.
Other forms: wikipedantic
(n., an example of wikipedantic behavior)
The wikipedant was constantly on her phone, checking and correcting our ENTIRE conversation.