textbook
n. countablen. a book that contains standard information about a specific subject, used by students to study for a course. It often includes lessons, exercises, and facts.
n. a comprehensive manual of instruction in a specific branch of study, typically used in educational settings. Often used figuratively to describe a classic or perfect example of something.
I need to buy a new biology textbook for my class.
The professor assigned three chapters from the history textbook to be read before the next lecture.
While the digital version is more portable, many students still prefer the physical textbook for its ease of annotation and the lack of screen-induced eye strain during long study sessions.
From text + book.
Commonly used as a noun, but can function as an attributive noun or adjective to mean 'classic' or 'typical' (e.g., 'a textbook example').