Back to explorer

entry

encyclopædia

/ɛnˌsaɪkləˈpiːdiə/

Comprehensive reference work summarizing organized knowledge

From Greek en- (in) + Greek cycl- (circle) + Greek paideia (education).

noun
en-
Ancient Greek
en (ἐν)
Preposition meaning “in” or “within”; here indicating inclusion or encompassing.
Greek compound formation
enkyklios (ἐγκύκλιος)
“Circular,” “going around,” and figuratively “general” or “comprehensive.”
cycl-
Ancient Greek
kyklos (κύκλος)
“Circle” or “wheel”; the source of the idea of something circulating around a complete range.
Ancient Greek
kyklios (κύκλιος)
“Circular” or “general,” formed from kyklos.
paideia
Ancient Greek
paideia (παιδεία)
“Education,” “training,” or the cultural formation of a child; from pais, “child.”
Ancient Greek phrase
enkyklios paideia (ἐγκύκλιος παιδεία)
“General education”: the complete circle of learning expected of an educated person.
Combined
Latin encyclopaedia
Renaissance Latin writers treated the Greek phrase enkyklios paideia as a single compound, producing the learned form later borrowed into English.
Early Modern English
encyclopaedia
A reference work presenting knowledge in organized articles or subjects.
Modern English
encyclopædia
A dated ligature spelling of encyclopaedia; the æ joins a and e.
Modern English
encyclopædia
“

Picture an ancient Greek student being led through a complete “circle” of learning rather than being trained in just one narrow subject. The phrase enkyklios paideia meant roughly “general education”: en meant “in,” kyklos meant “circle,” and paideia meant education or cultural formation. Renaissance scholars later fused that phrase into Latin encyclopaedia, creating a word whose architecture still displays the ambition to gather every field under one roof. The spelling encyclopædia preserves the old typographic æ, although modern English usually writes encyclopaedia or encyclopedia. So the word’s deepest image is not merely a shelf of books—it is a wheel of knowledge, with the learner traveling all the way around it.

§