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单词 meerschaum
释义 meer·schaum
\ˈmi(ə)rshəm, -iəsh-, -ˌshȯm\ noun
(-s)
Etymology: German, a species of Alcyonacea, meerschaum, from meer sea + schaum froth, foam
1. : a mineral Mg3Si4O10(OH)2.4H2O consisting of a hydrous magnesium silicate that is an extremely light fine soft white clayey material used for tobacco pipes and dug chiefly in Asia Minor (hardness 2-2.5, specific gravity 2) — called also sepiolite
2. : a tobacco pipe made of meerschaum
3. : gravel 3
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