| 单词 | polyphant | 
| 释义 | polyphantn.  In full  polyphant stone. A kind of Cornish potstone, greenish-grey in colour. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > 			[noun]		 > talc > steatite > varieties French chalk1728 potstone1741 Spanish chalk1760 polyphant stone1867 1867    Sci. Amer. 7 Dec. 358/3  				There is a stone quarried in Cornwall, Eng., called the Polyphant stone, which can be cut by a hand saw with ease when first mined, but in time becomes exceedingly hard. 1899    S. Baring-Gould Bk. of West II. 88  				In the porch under the stone bench, a hare hunt is carved on polyphant stone. 1931    Times 16 Oct. 17/6  				The body of the hall will be built of polyphant, a greenish-grey stone. 1976    Encounter Oct. (back cover) 		(advt.)	  				The plain work is in blue Forest of Dean stone and the decorative parts are in polyphant. 1978    Times 4 May 10/5  				Here in the old polyphant quarry, overgrown with the kind of primitive Arthurian wood peculiar to Cornwall. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < | 
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