outer core

is not in our dictionary (yet). Here's what it could mean:

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noun

The fluid layer of a planet's interior, composed primarily of iron and nickel, situated between the solid inner core and the mantle.

Example Sentences

Examples are provided to illustrate usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The movement of liquid iron in the outer core generates the magnetic field that protects the planet from charged particles released by the Sun.

From Science Daily ● Aug. 7, 2026

They may also point to connections between activity in the outer core and changes taking place even deeper inside the planet.

From Science Daily ● Aug. 7, 2026

Thesaurus

Possible Synonyms

liquid core layer
sub-mantle fluid
geodynamo region

Possible Antonyms

Words in our thesaurus

mantle
crust

other words

surface layer
lithosphere
solid core
inner core