Substorm

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A phenomenon in which a magnetotail becomes swollen and unstable.

    "At times, however, energy builds up within the magnetic field until it suddenly breaks loose into what is called a substorm, releasing a burst of electrical current that turns the auroras into pulsing red, purple and white colors."

Example

More examples

"At times, however, energy builds up within the magnetic field until it suddenly breaks loose into what is called a substorm, releasing a burst of electrical current that turns the auroras into pulsing red, purple and white colors."

Etymology

From sub- + storm.

Related phrases

substorm current wedge

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