English Explanatory Dictionary

lower mantle

English dictionary entry

Meanings

noun
  1. The part of the Earth's mantle from 660 to 2890 km (410 to 1800 miles) below Earth's surface, between the transition zone and the outer core; it occupies about 56% of the total volume of the Earth.
  2. Any similar layer in an exoplanet.

Word forms

lower mantle lower mantles

Synonyms

inner mantle mesosphere

Related words

upper mantle outer mantle
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