vellumizev.
Etymology: < vellum n. + -ize suffix.Previous versions of the OED give the stress as: ˈvellumize.
1907 C. Davenport 173 The white ‘vellumized’ pigskin has always been the most favourite material for the covering of German books.
This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2019).