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tropical depression

[ trop-i-kuhl di-presh-uhn ]

noun

, Meteorology.
  1. an atmospheric low-pressure system originating in the tropics, specifically, a tropical cyclone in which the maximum sustained wind speed is 38 miles per hour (62 kilometers per hour) or less.


tropical depression

noun

  1. an area of heavy rains and winds, the first stage in the development of a possible hurricane
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


tropical depression

  1. A tropical cyclone having sustained surface winds less than 39 mi (63 km) per hour.
  2. See Note at cyclone


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Word History and Origins

Origin of tropical depression1

First recorded in 1845–50; tropical + depression (in the sense “low atmospheric pressure”
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Compare Meanings

How does tropical depression compare to similar and commonly confused words? Explore the most common comparisons:

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Example Sentences

Ida weakens to a tropical depression as it moves through MississippiMake your battery lastAssume your electricity can go out at any time and plan accordingly.

Heavy rain from the remnants of Hurricane Ida, since downgraded to a tropical depression, is expected throughout the afternoon and into the early evening before clearing overnight.

Organizers of the Bonnaroo Music and Arts Festival announced Tuesday that they would be canceling this week’s event due to flooding from Ida, now downgraded to a tropical depression.

Now, the relentless storm, which remains a tropical depression as it swirls through the Deep South toward the Tennessee Valley, is slated to drop a slug of serious rainfall, bringing widespread flash flooding and the risk of a few tornadoes.

On Thursday morning, the National Hurricane Center had found that a complex of thunderstorms in west-central Caribbean had organized into a tropical depression, a precursor to a named tropical storm.

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tropical cyclonetropical disturbance