plaster of paris

noun phrase, often capitalized second P

plaster of par·is | \ -ˈper-əs

How to pronounce plaster of paris (audio)

, -ˈpa-rəs \

Definition of plaster of paris

: a white powdery slightly hydrated calcium sulfate CaSO₄·¹/₂H₂O or 2CaSO₄·H₂O made by calcining gypsum and used chiefly for casts and molds in the form of a quick-setting paste with water

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Cite this Entry

“Plaster of paris.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plaster%20of%20paris. Accessed 18 Jan. 2021.

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More Definitions for plaster of paris

plaster of paris

noun

English Language Learners Definition of plaster of paris

: a white powder that is mixed with water to form a paste which hardens quickly and which is used for making decorations, plaster casts, etc.

plaster of paris

noun, often capitalized 2nd P

plaster of par·is | \ -ˈper-əs

Kids Definition of plaster of paris

: a white powder that mixes with water to form a paste that hardens quickly and is used for casts and molds

plaster of paris

noun

plaster of par·is | \ -ˈpar-əs

Medical Definition of plaster of paris

: a white powdery slightly hydrated calcium sulfate CaSO₄·¹/₂H₂O or 2CaSO₄·H₂O that is made by calcining gypsum, forms a quick-setting paste with water, and is used in medicine chiefly in casts and for surgical bandages