gulf·​weed ˈgəlf-ˌwēd How to pronounce gulfweed (audio)
: any of several sargassums
especially : a branching olive-brown seaweed (Sargassum natans) of tropical American seas with numerous berrylike air vesicles

Examples of gulfweed in a Sentence

Recent Examples on the Web Recent Sargassum inundation events have caused millions of dollars of damage to Caribbean economies, which are highly dependent on pristine (i.e., free of gulfweed) beaches and crystal-clear waters filled with fish. Erik Kobayashi-Solomon, Forbes, 7 June 2022

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

Word History


Gulf of Mexico

First Known Use

1674, in the meaning defined above

Time Traveler
The first known use of gulfweed was in 1674

Dictionary Entries Near gulfweed

Cite this Entry

“Gulfweed.” Dictionary, Merriam-Webster, Accessed 24 Jul. 2024.

More from Merriam-Webster on gulfweed

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!