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.

Earth's magnetic field is produced by movement within the liquid outer core.

From Science Daily ● Aug. 7, 2026

Learning how and why the outer core changes is therefore important for both scientific research and practical applications.

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

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