What's the noun for encyclopedic? Here's the word you're looking for.
encyclopedia
A comprehensivereference work (often spanning several printed volumes) with articles (usually arranged in alphabetical order, or sometimes arranged by category) on a range of subjects, sometimes general, sometimes limited to a particular field.
“This is the same encyclopedia, with multimedia additions, that used to take up a huge bookshelf.”
“The book resembles an encyclopedia, with 3,000 recipes from five other countries in addition to Italy.”
“He is a walking encyclopedia of names, dates and facts relating to the history of the sport and the Hall of Fame.”
encyclopedist
A member of a group of French authors who collaborated in the 18th century in the production of the Encyclopédie, under the direction of Denis Diderot.