kieselguhr

kieselguhr

[kee-zuhl-goor]

Origin:
1870–75; < German, equivalent to Kiesel flint + Gu(h)r earthy deposit

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World English Dictionary
kieselguhr (ˈkiːzəlˌɡʊə)
 
n
an unconsolidated form of diatomite
 
[C19: from German Kieselgur, from Kiesel flint, pebble + Gur loose earthy deposit]

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