vellum

US /ˈvel.əm/
UK /ˈvel.əm/
"vellum" picture
1.

vélin, parchemin

prepared animal skin, typically calfskin, used as a material for writing, printing, or binding books, noted for its durability and smooth surface

:
The ancient manuscript was written on vellum.
L'ancien manuscrit était écrit sur du vélin.
She admired the intricate illustrations on the vellum pages.
Elle admirait les illustrations complexes sur les pages de vélin.
2.

papier vélin, papier calque

a high-quality, smooth, and slightly translucent paper, often used for technical drawings or special documents, designed to imitate the appearance of animal vellum

:
The architect printed the blueprints on heavy vellum paper.
L'architecte a imprimé les plans sur du papier vélin épais.
She used a fine-tipped pen to draw on the smooth surface of the vellum.
Elle a utilisé un stylo à pointe fine pour dessiner sur la surface lisse du vélin.