I. ˈkrȯs-ˈre-fərn(t)s, -ˈre-f(ə-)rən(t)s noun
Date: 1834
: a notation or direction at one place (as in a book or filing system) to pertinent information at another place
II. transitive verb
Date: 1902
1. : to supply with cross-references
cross-reference a book
2. : to research, verify, or organize by means of cross-references
cross-reference information