A more thorough explanation:

Term: IBID.
Definition: IBID is an abbreviation of the Latin word "ibidem," which means "in the same place." It is used in citations to show that the reference is to a work cited immediately before and that the cited matter appears on the same page of the same book. For example, if you are writing a research paper and you cite a book on page 10, and then you want to cite the same book on page 11, you can use IBID to show that the reference is to the same book and the same page. This saves space and makes your citations more efficient.