Dictionary.com

tropical depression

[ trop-i-kuhl di-presh-uhn ]
/ ˈtrɒp ɪ kəl dɪˈprɛʃ ən /
Save This Word!

noun Meteorology.
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.

COMPARE MEANINGS

Click for a side-by-side comparison of meanings. Use the word comparison feature to learn the differences between similar and commonly confused words.
QUIZ
QUIZ YOURSELF ON "IS" VS. "ARE"
"Is" it time for a new quiz? "Are" you ready? Then prove your excellent skills on using "is" vs. "are."
Question 1 of 7
IS and ARE are both forms of which verb?

Origin of tropical depression

First recorded in 1845–50; tropical + depression (in the sense “low atmospheric pressure”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use tropical depression in a sentence

British Dictionary definitions for tropical depression

tropical depression

noun
Caribbean 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

Scientific definitions for tropical depression

tropical depression

A tropical cyclone having sustained surface winds less than 39 mi (63 km) per hour. See Note at cyclone.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK