- a white ground of plaster and size, used esp in the Middle Ages and Renaissance to prepare panels or canvas for painting or gilding
- any white substance, esp plaster of Paris, that forms a ground when mixed with water
WordReference Random House Unabridged Dictionary of American English © 2026
ges•so
(jes′ō),USA pronunciation n., pl. -soes.
- Buildinggypsum or plaster of Paris prepared with glue for use as a surface for painting.
- Buildingany plasterlike preparation to prepare a surface for painting, gilding, etc.
- Buildinga prepared surface of plaster or plasterlike material for painting, gilding, etc.
- Latin gypsum gypsum
- Italian
- 1590–1600
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gesso /ˈdʒɛsəʊ/ n