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.

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

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

Goretti, named by French forecasters, is likely to undergo "explosive cyclogenesis" - also known as a "weather bomb".

From BBC • Jan. 7, 2026

Goretti will likely undergo "explosive cyclogenesis" on Thursday - sometimes called a "weather bomb".

From BBC • Jan. 6, 2026

Explosive cyclogenesis is generally a sign of a storm that could bring strong winds.

From BBC • Jan. 6, 2026

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

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