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protoporcelain

noun
pro·​to·​porcelain | \ ¦prōt(ˌ)ō+\

Definition of protoporcelain

: a porcelaneous ware lacking some of the qualities of a true porcelain specifically : a hard-fired gray kaolinic Chinese stoneware known since the Han dynasty

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First Known Use of protoporcelain

1904, in the meaning defined above

History and Etymology for protoporcelain

prot- + porcelain; probably translation of German urporzellan

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The first known use of protoporcelain was in 1904

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