I. ˈ ̷ ̷ˈ ̷ ̷ˌ ̷ ̷ verb
Etymology: cross (V) + index (v.)
transitive verb
1.
a. : to refer by means of a note at one place to matter at another place
all items in the biology file are cross-indexed to related material in the zoology file
b. : to refer from (a variant or subordinate entry) to a main entry
“public sanitation” should be cross-indexed to “public health”
2. : to provide (as the body of a text, an index, or a file) with cross-references
a cross-indexed report
intransitive verb
: to function as or become provided with a cross-referring note or index
most variants cross-index to main entries
all annotations for the most part cross-index
II. noun
: a note, series of notes, or index that cross-indexes
each cross-index is written on a blue slip
a text with a cross-index in footnotes as well as a general index in the back