English

Definition of gypsum noun from the Oxford Advanced Learner's Dictionary

 

gypsum

 noun
noun
BrE BrE//ˈdʒɪpsəm//
 
; NAmE NAmE//ˈdʒɪpsəm//
 
[uncountable]
 
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a soft white mineral like chalk that is found naturally and is used in making plaster of Paris Word Origin late Middle English: from Latin, from Greek gupsos.
See the Oxford Advanced American Dictionary entry: gypsum