Cyclopaedia and Cyclopedia

Cyclopaedia noun - A reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty.

Cyclopedia is a synonym for cyclopaedia in encyclopedia topic. In some cases you can use "Cyclopedia" instead a noun "Cyclopaedia", when it comes to topics like encyclopaedia.

Cyclopedia noun - A reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty.

Cyclopaedia is a synonym for cyclopedia in encyclopedia topic. You can use "Cyclopaedia" instead a noun "Cyclopedia", if it concerns topics such as encyclopaedia.