cyclogenesis

American

[sahy-kluh-jen-uh-sis] / ˌsaɪ kləˈdʒɛn ə sɪs /

noun

Meteorology.

the development or intensification of a cyclone, usually in simultaneous occurrence with a decrease in atmospheric pressure.

They’re studying the timing of cyclogenesis in relation to the onset of monsoon season.

Etymology

Origin of cyclogenesis

First recorded in 1935–40; cycl(one) + -o- ( def. ) + genesis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But as the low pressure engages with the jet stream it will undergo a process called explosive cyclogenesis, where the central pressure drops by 24 millibars or more in 24 hours.

From BBC • Jan. 8, 2026

BBC Weather's Matt Taylor confirmed that Ciarán has been classified as a weather bomb, or 'explosive cyclogenesis'.

From BBC • Nov. 2, 2023

In a process called explosive cyclogenesis, the low pressure system will deepen by over 24 millibars in 24 hours.

From BBC • Oct. 31, 2023

A cyclogenesis refers to an intensification of a cyclone or low-pressure storm system.

From Seattle Times • Feb. 3, 2023

In some circumstances, the atmospheric conditions can create explosive cyclogenesis - or a weather bomb - just to the west of the UK, which can bring the most damaging winds.

From BBC • Feb. 1, 2023

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023