cyclopaedia

/ˌsaɪkləˈpiːdiə/
noun
  1. A book or set of books containing information on many subjects, arranged alphabetically; an encyclopedia.
    • She spent hours reading the cyclopaedia to learn about ancient civilizations.
    • The old library had a complete cyclopaedia from the 19th century.
    • He bought a new cyclopaedia for his children to help with their homework.
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