encyclopaedia
/ɪnˌsaɪkləˈpiːdiə/
noun
- A book or set of books containing information on many subjects, usually arranged alphabetically.
- The library has a 20-volume encyclopaedia of science and nature.
- She looked up the history of ancient Rome in the encyclopaedia.
- My grandfather gave me his old encyclopaedia set from the 1960s.
- A website or digital resource that provides a wide range of information on many topics.
- Students often use an online encyclopaedia for research projects.
- The digital encyclopaedia includes videos and interactive maps.
- Wikipedia is the most popular online encyclopaedia in the world.