| hornstone | <chemical> A siliceous stone, a variety of quartz, closely resembling flint, but more brittle. Synonym: chert. Source: Websters Dictionary (01 Mar 1998) |
|---|
| hornstone | a fine-grained metamorphic rock formed by the action of heat on clay rocks |
|---|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|