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

tropical depression

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

Word History and Origins

Origin of tropical depression¹

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

Example Sentences

Another low pressure area off Bicol could intensify into a tropical depression by the end of the week, Ms Claren said.

From BBC

While the typhoon has been downgraded to a tropical depression since making landfall in northern Vietnam, it has continued to cause deadly landslides across south-east Asia.

From BBC

Another tropical depression is forecast to develop in the western Pacific in the coming week.

From BBC

Yagi, which was initially categorised as a super typhoon - the equivalent of a category 5 hurricane - but later downgraded to a tropical depression, has continued to wreak havoc in Vietnam since making landfall on Saturday.

From BBC

Although it has now weakened into a tropical depression, authorities have warned Yagi will create more disruption as it moves westwards.

From BBC