noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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Pronunciation
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UK:/saɪk.ləʊˈpiːd.i.ə/
rhymes with -iːdiə
1
noun
Meaning 1
The circle or compass of the arts and sciences (originally, of the seven so-called liberal arts and sciences); circle of human knowledge.
Definition source: English Wiktionary via Wiktextract
Usage: archaic
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
An encyclopedia.
Definition source: English Wiktionary via Wiktextract
Usage: archaic
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
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
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: encyclopedia, cyclopedia, encyclopaedia
Antonyms: none provided
Broader terms: reference book, reference, reference work, book of facts
Narrower terms: book of knowledge
History
Etymology
From Ancient Greek κύκλος (kúklos, “circle”) + παιδεία (paideía, “child-rearing, education”). See cycle, and compare encyclopedia.