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

First Known Use of plaster of paris

15th century, in the meaning defined above

History and Etymology for plaster of paris

Paris, France

Keep scrolling for more

Learn More about plaster of paris

Time Traveler for plaster of paris

Time Traveler

The first known use of plaster of paris was in the 15th century

See more words from the same century

Statistics for plaster of paris

Cite this Entry

“Plaster of paris.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plaster%20of%20paris. Accessed 9 May. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

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 How to pronounce plaster of paris (audio) \

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 How to pronounce plaster of paris (audio) \

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

More from Merriam-Webster on plaster of paris

Nglish: Translation of plaster of paris for Spanish Speakers

Britannica.com: Encyclopedia article about plaster of paris

Comments on plaster of paris

What made you want to look up plaster of paris? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Star Wars Words Quiz

  • cu jedi training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!