Definitions
from The Century Dictionary.
- noun In geology, the interior of the earth, believed to be highly heated, as contrasted with the relatively cold crust which is called the lithosphere.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology, dated The
zone ofigneous activity andlava formation, situated between thelithosphere andbarysphere .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
pyro- + sphere
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