Jisho

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けいそうど 珪藻土
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Noun
1. diatomaceous earth; diatomite; siliceous marl; kieselguhr​Geology
Wikipedia definition
2. Diatomaceous earth​Diatomaceous earth also known as D.E. , diatomite, or kieselgur/kieselguhr, is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder. It has a particle size ranging from less than 1 micrometre to more than 1 millimeter, but typically 10 to 200 micrometres. This powder has an abrasive feel, similar to pumice powder, and is very light as a result of its high porosity.
Read “Diatomaceous earth” on English Wikipedia
Read “珪藻土” on Japanese Wikipedia
Read “Diatomaceous earth” on DBpedia

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