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2.
a book or set of books containing many articles arranged in alphabetical order which deal either with the whole of human knowledge or with a particular part of it

a reference work offering comprehensive information on all or specialized areas of knowledge
The Cambridge Encyclopaedia of Language
by amaraa February 22, 2007
 
1.
Just a fancy way to write Encyclopedia.
How do you pronounce encyclopAEdia?
by Kobear June 13, 2008