Nope. No dictionary defines any word. No dictionary owns any word. Dictionaries are used to standardize spelling and pronunciation, and give examples of how a word is used, but they do not define any word.
People define words. It's what makes a language 'live' and ever changing. They are used to communicate ideas. People define words, collectively. The study of where a word comes from is a hobby of mine, called etymology.
Some words, like 'science', 'religion', 'reality', etc. are defined by philosophical arguments. Some words are defined as specialist lingo in a trade, a branch of knowledge, or a cultural environment, such as 'mathematics', 'logic', 'volt', 'ampere', 'matrix', or 'liftoff', 'you', 'me', 'food', 'drink'. Some are define as constructs for a language, such as 'and', 'but', 'or', 'because'.
But no dictionary defined any of them. These words existed long before dictionaries themselves, and will exist even if every dictionary was destroyed.
A book is not a language. A language is not a book.