encyclopedia
US /ɪnˌsaɪ.kləˈpiː.di.ə/
UK /ɪnˌsaɪ.kləˈpiː.di.ə/

1.
энциклопедия
a book or set of books giving information on many subjects or on many aspects of one subject and typically arranged alphabetically.
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I looked up the definition of 'atom' in the encyclopedia.
Я посмотрел определение 'атома' в энциклопедии.
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The library has a vast collection of encyclopedias on various subjects.
Библиотека располагает обширной коллекцией энциклопедий по различным предметам.