(countable) A quotation is a sentence or phrase that was said by someone and is now being used or referred to by somebody else. Quotations can be from books, movies, speeches, television shows, songs, etc.
This chapter began with a quotation from Monica Furlong.
Consider the following quotation from the Bible: Job 16:18: "O earth, cover not thou my blood."
(uncountable) Quotation is the act of using somebody else's exact words.