a book used for instructional purposes, especially in schools and colleges. Cp. trade book. as in a textbook in style and content, as a textbook definition of literacy.
a book prepared for use in schools or colleges; "his economics textbook is in its tenth edition"; "the professor wrote the text that he assigned students to buy"
a book that strives to teach a student about a particular discipline, usually academic, and prepare him or her to perform some task or tasks using the acquired learning