| 单词 | myrsen | 
| 释义 | † myrsenn. Obsolete. rare.   = meerschaum n. 1. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > 			[noun]		 > smectites > sepiolite keffekill1784 meerschaum1784 myrsen1794 sea-froth1801 magnesite1837 sea-foam1837 sepiolite1854 magnesium trisilicate1936 1794    R. Kirwan Elements Mineral. 		(ed. 2)	 I. 145  				Keffekill or myrsen, which the Germans corruptly call Meerschaum, is said to be when recently dug of a yellow colour. 1801    T. Thomson in  Encycl. Brit. Suppl. II. 217/1  				Myrsen—Seafroth. This is a new entry (OED Third Edition, June 2003; most recently modified version published online June 2018). < | 
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