encyclopedia

noun

en·​cy·​clo·​pe·​dia in-ˌsī-klə-ˈpē-dē-ə 

: a work that contains information on all branches of knowledge or treats comprehensively a particular branch of knowledge usually in articles arranged alphabetically often by subject

Examples of encyclopedia in a Sentence

Recent Examples on the Web

These talk pages are now, according to the Verge, at least five times as large as the encyclopedia itself. —Imogen West-Knights, The Dial, 10 Feb. 2026

Whether playing banjo, guitar or the percussion instrument known as bones, Flemons is a walking encyclopedia of pre-war African-American string-band styles, blues, country and Black cowboy folk songs whose performances are wonderfully down-to-earth. —George Varga, San Diego Union-Tribune, 5 Feb. 2026

Fewer readers visit the encyclopedia directly. —IEEE Spectrum, 30 Jan. 2026

This nonprofit organization is dedicated to fostering the growth, development and distribution of free, multilingual content via free knowledge platforms like Wikipedia, the free encyclopedia. —Laura Begley Bloom, Forbes.com, 29 Jan. 2026

Word History

Etymology

Medieval Latin encyclopaedia course of general education, from Greek enkyklios + paideia education, child rearing, from paid-, pais child — more at few

First Known Use

1644, in the meaning defined above

Rhymes for encyclopedia

• cyclopaedia
• cyclopedia
• hypermedia
• intermedia
• multimedia
• comedia
• commedia
• encyclopaedia

Kids Definition

encyclopedia

noun

en·​cy·​clo·​pe·​dia

variants also encyclopaedia

in-ˌsī-klə-ˈpēd-ē-ə

: a work that contains information on all subjects or one that covers a certain subject thoroughly usually with articles arranged alphabetically

Etymology

from Latin encyclopedia "course of general education," from Greek enkyklios "general, all-around," literally, "circular" and Greek paideia "education, child rearing"