Fibers from the medial side of each eye cross over to the opposite side of the brain at the?
The definition of metamorphic is characterized or formed by changing. An example of something metamorphic is a caterpillar turning into a butterfly; a metamorphic animal.
In certain conditions, igneous or sedimentary rocks can be changed into different rocks under intense heat and pressure. These rocks literally change into new substances very different from their old ones. This usually happens as rocks are buried deep within the crust. One of the most common metamorphic rocks is marble.