stra·​tus ˈstrā-təs How to pronounce stratus (audio)
plural strati ˈstrā-ˌtī How to pronounce stratus (audio)
: a low cloud form extending over a large area at altitudes of usually 2000 to 7000 feet (600 to 2100 meters) see cloud illustration

Examples of stratus in a Sentence

Recent Examples on the Web Among the participants were men and women of all ages, though most probably not of all socioeconomic strati. Peter Vanham, Fortune Europe, 26 Mar. 2024 Portland will likely start Friday with morning clouds as some of that marine stratus seeps into the metro area. oregonlive, 27 July 2023 Most of it will lift after 9 a.m., becoming stratus — or high fog — by midmorning. Gerry Díaz, San Francisco Chronicle, 15 Apr. 2023 Beneath the smoke, low level stratus clouds also swirl in the weather system's circulation pattern. Tom Yulsman, Discover Magazine, 9 June 2016 Despite the sun’s attempts to shine over San Francisco this morning, the city and most of the Bay Area will be shrouded in a sea of thick stratus clouds today. Gerry Díaz, San Francisco Chronicle, 8 Dec. 2022 The Cloudmonster is different: more light, fluffy cumulus than flat, static stratus. Cory Smith, Outside Online, 18 Oct. 2022 Nimbostratus, altostratus, cumulonimbus, stratus and even cumulus clouds can all appear dark in color at times. Anna Kaufman, USA TODAY, 17 July 2022 Thursday will start out partly cloudy in Portland as some marine stratus has moved into the valleys. oregonlive, 30 June 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'stratus.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin, from Latin, past participle of sternere

First Known Use

circa 1803, in the meaning defined above

Time Traveler
The first known use of stratus was circa 1803

Dictionary Entries Near stratus

Cite this Entry

“Stratus.” Dictionary, Merriam-Webster, Accessed 25 Jun. 2024.

Kids Definition


stra·​tus ˈstrāt-əs How to pronounce stratus (audio)
plural strati ˈstrāt-ˌī How to pronounce stratus (audio)
: a cloud form extending over a large area at altitudes of usually 2000 to 7000 feet (600 to 2100 meters)

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