- a soft very fine-grained whitish rock consisting of the siliceous remains of diatoms deposited in the ocean or in ponds or lakes. It is used as an absorbent, filtering medium, insulator, filler, etc
| 单词 | diatomite |
| 释义 | Collins Concise English Dictionary © HarperCollins Publishers:: diatomite /daɪˈætəˌmaɪt/ n
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