1. a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty

Similar word(s): cyclopaedia, cyclopedia, encyclopaedia

Definition categories: communication, reference

Sentences with encyclopedia as a noun:

- I only use the library for the encyclopedia, as we’ve got most other books here.

- His life's work was a four-volume encyclopedia of aviation topics.