kieselguhr
kie·sel·guhr
noun
Origin
Borrowed from German Kieselguhr, older spelling of Kieselgur, from Kiesel (“pebble, gravel”) + Gur (“guhr”).
Related words
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.