Lower mantle

Noun

Word Frequency: 0.1

Definitions

1.NounThe 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.NounAny similar layer in an exoplanet.

Synonyms

lowermost seafloor ocean floor sea floor ocean bottom bottommost asthenosphere subducting subduction sea bottom lithospheric subducted

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