from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, relating to, or characterized by metamorphosis.
- adj. Geology Changed in structure or composition as a result of metamorphism. Used of rock.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having been structurally altered as a result of, or resulting from, exposure to intense heat and/or pressure (at the contact zone between colliding plates, for example).
- n. A rock that has been changed from its original form by subjection to heat and/or pressure.
from the GNU version of the Collaborative International Dictionary of English
- adj. Subject to change; changeable; variable.
- adj. Causing a change of structure.
- adj. Pertaining to, produced by, or exhibiting, certain changes which minerals or rocks may have undergone since their original deposition; -- especially applied to the recrystallization which sedimentary rocks have undergone through the influence of heat and pressure, after which they are called metamorphic rocks.
from The Century Dictionary and Cyclopedia
- Producing metamorphosis; changing the form or structure; transforming: as, a metamorphic cause or agency; metamorphic action.
- Exhibiting metamorphosis or metamorphism; changed in form or structure; metamorphosed.
- See metamorphism.
- Noting races formed by intercrossing of archimorphic races in those parts of the world where distinct archimorphic races come into contact. Examples of metamorphic races are the Malay, Ethiopians, and Hottentots.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. characterized by metamorphosis or change in physical form or substance
- adj. of or relating to metamorphosis (especially of rocks)
In its more limited sense, the term metamorphic is confined to those changes of the rock which are produced, not by the effect of the atmosphere or of water on the exposed surfaces, but which are produced, directly or indirectly, by agencies seated in the interior of the earth.
Rocks modified in this way are termed metamorphic rocks.
The conception of rocks as representing phases or stages in a progressive series of changes called the metamorphic cycle aids greatly in correlating and holding in mind many details of rock nature and origin, and brings into some sort of perspective the conditions which have produced rocks.
There is also a class of rocks, called metamorphic rocks, including some kinds of marble.
When we reached an elevation of about two hundred feet, the coralline rock which fringes the shore was succeeded by a hard crystalline rock, a kind of metamorphic sandstone.
I may observe that in the case of the frozen snow the columnar structure must be owing to a "metamorphic" action, and not to a process during deposition.
Under the general heading of common rocks are included the ordinary igneous, sedimentary, and "metamorphic" rocks, and the unconsolidated clays, sands, and gravels characteristic of surface conditions, which are mined and quarried for commercial use.
Soil originate from rocks, igneous, sedimentary, and "metamorphic" by processes of weathering, and by the mixing of the altered mineral products with decayed plant remains or _humus_.
I believe that the geographical distribution of organic beings in past and present times, the kind of affinity linking them together, their so-called "metamorphic" and "abortive" organs, appear in favour of this view.
Precipitous cliffs of somber rock, ancient metamorphic seabeds and long-frozen lava towers over the milky flow of the river and over us come to challenge it.