kie·​sel·​guhr ˈkē-zəl-ˌgu̇r How to pronounce kieselguhr (audio)
: loose or porous diatomite

Word History


German Kieselgur

First Known Use

1875, in the meaning defined above

Time Traveler
The first known use of kieselguhr was in 1875

Dictionary Entries Near kieselguhr

Cite this Entry

“Kieselguhr.” Dictionary, Merriam-Webster, Accessed 25 May. 2024.

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