Definition of blue jet in English:

blue jet

Line breaks: blue jet

Entry from British & World English dictionary

noun

A very faint short-lived cone of deep blue light sometimes observed in the upper atmosphere above an intense thunderstorm.

Definition of blue jet in:

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Word of the day abjure
Pronunciation: əbˈdʒʊə
verb
solemnly renounce (a belief, cause, or claim)