lower mantle

noun — 2 senses

lower mantle

noun

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.

Holonyms: mantle < Earth, earth

Any similar layer in an exoplanet.

Holonyms: mantle < planet

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.