Word.ws English Dictionary

Plural of encyclopedia

regular plural

The plural of encyclopedia is encyclopedias or encyclopediae.

Forms of encyclopedia

Singularencyclopedia /ɪnˌsaɪkləˈpiːdi.ə/
Pluralencyclopedias
encyclopediae /ɪnˌsaɪ.kləˈpi(ː).di.aɪ/
Countablecountable

Encyclopedias and encyclopediae in a sentence

  • Encyclopedias, how-to manuals and biographies are all considered nonfiction and so are kept in the nonfiction section.From the entry nonfiction
  • There are also fake entries in dictionaries and encyclopedias, known as nihilartikels, which serve the same purpose.[2005 December 18, Tom Anderson, “Putney Green”, in uk.transport.london (Usenet). From the entry nihilartikel
  • Howard, who works from home, has witnessed (among other things) what she calls a “renaissance” in encyclopedias used as laptop stands.2020 October 16, Morwenna Ferrier, “Cluttercore: the pandemic trend for celebrating stuff, mess and comfort”, in The Guardian. From the entry cluttercore
  • A strict dichotomy between dictionaries and encyclopedias is arguably untenable.2003, R. R. K. Hartmann, Lexicography. From the entry encyclopedicity

Meaning of encyclopedia

  1. noun A comprehensive reference 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.
  2. noun Similarly comprehensive works in other formats.
  3. noun The circle of arts and sciences (see Etymology); a comprehensive summary of knowledge, or of a branch thereof.

Full definition of encyclopedia

Questions about the plural of encyclopedia

What is the plural of encyclopedia?
The plural of encyclopedia is encyclopedias or encyclopediae.
Which is correct, encyclopedias or encyclopediae?
Both are used. encyclopedias is the more common of the two in English writing.
Is encyclopedia countable?
Encyclopedia is a countable noun.

Source and license

Adapted from Wiktionary: encyclopedia (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Plural of encyclopedia.” Word.ws, https://word.ws/plural/encyclopedia. Based on Wiktionary, CC BY-SA 4.0.