diatomaceous

diatomaceous

[dahy-uh-tuh-mey-shuhs]
adjective
consisting of or containing diatoms or their fossil remains.

Origin:
1840–50; < Neo-Latin Diatomace(ae) an order name (see diatom, -aceae) + -ous

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World English Dictionary
diatomaceous (ˌdaɪətəˈmeɪʃəs)
 
adj
of, relating to, consisting of, or containing diatoms or their fossil remains

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