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kieselguhr

noun
kie·​sel·​guhr | \ ˈkē-zəl-ˌgu̇r How to pronounce kieselguhr (audio) \

Definition of kieselguhr

: loose or porous diatomite

First Known Use of kieselguhr

1875, in the meaning defined above

History and Etymology for kieselguhr

German Kieselgur

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