Rock that was once one form of rock but has changed to another under the influence of heat, pressure, or some other agent without passing through a liquid phase.
Note: Examples are marble, which can be formed from limestone, and slate, which is formed from shale.
00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a gadget; dingus; thingumbob. |
| metamorphic rock | |
noun | |
| rock altered by pressure and heat |