What is the definition of an encyclopedia.?

An encyclopedia is a comprehensive reference work containing articles on a wide range of subjects or on numerous aspects of a particular field, usually arranged alphabetically. It provides information on various topics, often written by experts in the field, and is typically used for research or general knowledge purposes.

An encyclopedia is a comprehensive, authoritative, and alphabetically arranged work containing articles on every branch of knowledge. It is a collection of information on a wide range of subjects, typically arranged in alphabetical order. Encyclopedias are often used for research, education, and general knowledge.