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A person that spends all day reading WikiPedia articles and remembers all the summaries of major topics. Later on to use this information in conversations and by that presenting himself as a highly intelegent person.
Sarah: "Gush, i didnt know that john knows so much"
Paula: "Dont get too excited, i've read what he said on WikiPedia so i guess he's a WikiGenius"
by Brara July 01, 2007
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A person who's only knowledge of a subject was learned from Wikipedia
Yesterday he knew nothing about the subject now all of a sudden he's a "wikigenius" on the topic
by Michael Loud September 01, 2018
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