(~s, cross-referencing, ~d)
1.
A ~ is a note in a book which tells you that there is relevant or more detailed information in another part of the book.
N-COUNT
2.
If something such as a book is ~d, ~s are put in it.
Nearly 2,300 plant lists have been checked and ~d.
...an index of products and services which is ~d to the supplying companies.
VERB: usu passive, be V-ed, V-ed