Single or multi-volume publication that contains accumulated and authoritative knowledge on one subject (such as an encyclopedia of architecture or music), a few related subjects (such as an encyclopedia of arts or engineering), or a wide variety of subjects arranged alphabetically (such as the Encyclopedia Britannica). Also spelled as encyclopaedia.

Use encyclopedia in a sentence

  • Even though they can be considered out dated in todays world an encyclopedia can still give you the information you need.

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  • The high school student used an encyclopedia to look up different topics for his important research paper due next week.

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  • Today most of the knowledge the world has to offer can be quickly found on the internet but twenty years ago people would use an encyclopedia.

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