Definition of term:: Vellum

  • A type of white leather, most commonly made from calfskin that has been treated, but not tanned, and used for bindings, and in medieval days, used for handwritten documents. Changes in humidity play havoc with this material, and vellum-covered boards often warp dramatically.
French: Vélin
Italian: Pergamena
Spanish: Pergamino
Source: What bookdealers really mean. A dictionary by Tom Congalton and Dan Gregory (Between the Covers), with additions from other sources