jet stream

noun

Definition of jet stream

: a long narrow meandering current of high-speed winds near the tropopause blowing from a generally westerly direction and often exceeding a speed of 250 miles (402 kilometers) per hour

Recent Examples of jet stream from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'jet stream.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of jet stream

1947


JET STREAM Defined for English Language Learners

jet stream

noun

Definition of jet stream for English Language Learners

  • : a strong current of fast winds high above the Earth's surface


JET STREAM Defined for Kids

jet stream

noun

Definition of jet stream for Students

: high-speed winds blowing from a westerly direction several miles above the earth's surface

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