Bibliography. the number of pages or leaves of a book, manuscript, etc., identified in bibliographical description or cataloging.
the figures by which pages are marked to indicate their sequence.
the act of paginating.
Origin of pagination
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
"action of marking page numbers," 1841, probably from French pagination (1835), from Latin pagina (see page (n.1)).
Online Etymology Dictionary, © 2010 Douglas Harper