What does cyclone mean?
A cyclone is a vast rotating weather system in which winds spiral inward around a centre of low atmospheric pressure. In meteorology the word covers everything from ordinary mid-latitude low-pressure systems that bring cloud and rain to devastating tropical storms with hurricane-force winds. Which storms earn the name depends largely on geography: the same intense tropical storm is called a hurricane in the Atlantic, a typhoon in the Northwest Pacific, and a cyclone in the Indian Ocean and South Pacific, where the term dominates news coverage during storm season. The word derives from the Greek kyklos, meaning 'wheel' or 'circle', and was coined in the nineteenth century by Henry Piddington, a British official in Calcutta who studied storm damage and advised shipping on how to navigate these revolving winds. Because of its scale and destructive potential, cyclone is a word strongly associated with emergency warnings, evacuation, and coastal damage, though in technical use it simply names a fundamental pattern of atmospheric circulation.
nounA large-scale rotating storm system with low pressure at its center and inward-spiraling winds; in some regions the term refers specifically to a severe tropical storm equivalent to a hurricane or typhoon.
- A large-scale atmospheric system of winds spiralling around a centre of low barometric pressure.
- In parts of the Indian Ocean and South Pacific: a severe tropical storm with winds of at least hurricane force.
- Informally, in some regions such as coastal Australia and parts of the US Midwest, any destructive windstorm.
"The cyclone made landfall overnight, flattening fishing villages along the coast."
"Meteorologists tracked the cyclone as it strengthened over the warm waters of the Bay of Bengal."
"The term 'cyclone' describes not just violent tropical storms but also the everyday low-pressure systems that bring rain to temperate latitudes."
The standard plural follows regular formation; plural usage appears most often in scientific contexts discussing multiple storm systems.
"Several cyclones formed in the basin that season."
The word 'cyclone' was coined in the 1840s by a British judge in colonial India who studied storms so sailors could outrun them — he named them after Greek 'kyklos', meaning 'wheel of a circle'.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cyclone
The English word 'cyclone' was coined in the 1840s by Henry Piddington, a British sea captain-turned-official based in Calcutta, whose studies of storm damage led him to advise mariners on navigating circular storms. He derived the name from the Greek kyklos, meaning 'circle' or 'wheel'. It shares this root with words such as 'cycle' and 'encyclopedic'. The coinage reflects the nineteenth-century scientific recognition that these great storms revolve around a calm central eye.
Related word forms
How cyclone is actually used
Register is neutral and common in both meteorology and everyday news reporting. Regional usage varies sharply: in the North Atlantic the same storm is called a hurricane, and in American usage 'cyclone' often denotes an ordinary low-pressure system rather than a violent tropical storm. The word carries no strong connotation beyond severity when used of tropical systems.
Easily confused with cyclone
A tornado is a violently rotating column of air extending from a thunderstorm to the ground and is far smaller than a cyclone, which is a large-scale weather system spanning hundreds of kilometres.
A hurricane is the same phenomenon as a tropical cyclone; the name differs only by region — 'hurricane' in the Atlantic and Northeast Pacific, 'typhoon' in the Northwest Pacific, and 'cyclone' in the Indian Ocean and South Pacific.