Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The central part of the earth, beneath the lithosphere.

from The Century Dictionary.

  • noun The earth's interior, an inner core known to be of greater density than the crust: so named from this property.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Geol.) The heavy interior portion of the earth, within the lithosphere.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The central core of the Earth.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek barus, heavy; see gwerə- in Indo-European roots + sphere.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Greek barus 'heavy' + sphere.

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Examples

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