diatomaceous

American  

[dahy-uh-tuh-mey-shuhs] / ˌdaɪ ə təˈmeɪ ʃəs /

adjective

1. consisting of or containing diatoms or their fossil remains.

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diatomaceous British  

/ ˌdaɪətəˈmeɪʃəs /

adjective

1. of, relating to, consisting of, or containing diatoms or their fossil remains

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Etymology

Origin of diatomaceous

1840–50; < New Latin Diatomace ( ae ) an order name ( diatom, -aceae ) + -ous

Example Sentences

Diatomaceous earth, a powder made from fossilized diatoms, dries out the exoskeletons of roaches.

From Salon

Flanking the east side of the Rappahannock River in Richmond County, Fones Cliffs reaches 100 feet high in some parts and is a rare spot in the topography of the mid-Atlantic region because of its white diatomaceous earth.

From Washington Post

Mixed with diatomaceous earth, a fine powder of algae fossils often used by gardeners, the coarse gray stuff makes a decent substitute for the density and texture of Mars’ dirt.

From Los Angeles Times

It suggests diatomaceous earth and commercial rust remover, blended to the consistency of peanut butter.

From Seattle Times

This four-mile formation, composed of clay and diatomaceous earth, has been a conservation priority of the tribe, the Chesapeake Conservancy, the U.S.

From Washington Post