Definition of substorm in English:

substorm

Syllabification: sub·storm
Pronunciation: /ˈsəbˌstôrm
 
/

noun

  • A localized disturbance of the earth’s magnetic field in high latitudes, typically manifested as an aurora.
    More example sentences
    • A typical example of how both missions will co-operate is the study of the magnetic substorms producing the bright aurorae.
    • The jagged peaks mark the arrival of electrons in substorms, and they gradually drift away again.
    • A magnetospheric substorm has three distinct phases: growth, expansion, and recovery.

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Pronunciation: məˈlôrd
noun
used to address an English nobleman