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Pronunciation change

Noun change

Singular
papyrus

Plural
papyri or papyruses

 
The Heracles papyrus.
 
papyri are of the sedge-family
  1. (countable) A papyrus is a paper-like material.
    About 2,000 years ago, people wrote documents on papyrus.
  2. (uncountable) A papyrus is a plant in a wetland sedge.