A soft, crumbly, porous sedimentary deposit formed from the fossil remains of diatoms.
硅藻土
Example sentencesExamples
As the diatoms die, they sink to the ocean floor, becoming a thick ooze of decomposing matter, and eventually giving rise to deposits of the sediment called diatomaceous earth.
Also, vacuuming and using diatomaceous earth (the sandlike remains of ancient marine organisms) are natural ways of helping to control fleas in the environment.
Diatoms have an extensive fossil record going back to the Cretaceous; some rocks are formed almost entirely of fossil diatoms, and are known as diatomite or diatomaceous earth.
Depth filtration, usually with a particularly porous form of silica called diatomaceous earth forming the layer through which the cloudy wine is passed, is commonly used for this early rough filtration.
The richest sources of diatom fossils are deposits of their skeletons known as diatomite, or diatomaceous earth.
Definition of diatomaceous earth in US English:
diatomaceous earth
noun
A soft, crumbly, porous sedimentary deposit formed from the fossil remains of diatoms.
硅藻土
Example sentencesExamples
Diatoms have an extensive fossil record going back to the Cretaceous; some rocks are formed almost entirely of fossil diatoms, and are known as diatomite or diatomaceous earth.
The richest sources of diatom fossils are deposits of their skeletons known as diatomite, or diatomaceous earth.
Also, vacuuming and using diatomaceous earth (the sandlike remains of ancient marine organisms) are natural ways of helping to control fleas in the environment.
Depth filtration, usually with a particularly porous form of silica called diatomaceous earth forming the layer through which the cloudy wine is passed, is commonly used for this early rough filtration.
As the diatoms die, they sink to the ocean floor, becoming a thick ooze of decomposing matter, and eventually giving rise to deposits of the sediment called diatomaceous earth.