reference book
US /ˈref.ər.əns ˌbʊk/
UK /ˈref.ər.əns ˌbʊk/
1.
a book, such as a dictionary or encyclopedia, containing facts and information and intended for reference rather than for reading through
:
•
I consulted a reference book to find the definition of the word.
•
The library has a wide selection of reference books on various subjects.