Geodynamo

//ˌd͡ʒiːə(ʊ)ˈdʌɪnəməʊ// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    the mechanism responsible for the generation of the Earth's magnetic field caused by convection and conduction currents in the fluid core

Example

More examples

"Earth’s magnetic field is generated from its outer core, 1,800 miles below the surface, comprised of molten iron and other metals that are constantly churning and acting like a giant generator – known as geodynamo — that generates electric currents that produce the magnetic field."

Etymology

From geo- + dynamo.

Related phrases

magnetic field

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.