medusa
noun
a saucer-shaped or dome-shaped, free-swimming jellyfish or hydra.
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medusa
1 American
[muh-doo-suh, -zuh, -dyoo-]
/ məˈdu sə, -zə, -ˈdju- /
noun
Zoology.
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medusas,
plural
-
medusae
plural
Medusa
2
American
[muh-doo-suh, -zuh, -dyoo-]
/ məˈdu sə, -zə, -ˈdju- /
noun
Classical Mythology.
-
Medusas
plural
medusa
1
British
/ mɪˈdjuːzə /
noun
Medusa
2
British
/ mɪˈdjuːzə /
noun
medusa
Scientific
/ mĭ-do̅o̅′sə /
-
medusas
plural
-
A cnidarian in its free-swimming stage. Medusas are bell-shaped, with tentacles hanging down around a central mouth. Jellyfish are medusas, while corals and sea anemones lack a medusa stage and exist only as polyps.
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Compare polyp
Medusa
Cultural
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of medusa1
1750–60; special use of Medusa, alluding to the Gorgon's snaky locks
Origin of Medusa2
< Latin < Greek Médousa, special use of médousa, feminine of médōn ruling
Vocabulary lists containing medusa
Marine Biology - Middle School
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Marine Biology - High School
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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.
See Examples For:
A jellyfish begins its life cycle as an anemone-like creature on the sea floor before undergoing a metamorphosis and sprouting into a recognizable medusa — that Pacman ghost shape we're all familiar with.
From Salon ● Aug. 2, 2023
Scientists prefer the term jelly or medusa over jellyfish because the creatures are not fish.
From Los Angeles Times ● Apr. 25, 2022
Dr. Griffith knew that her disease, like cancer, was not one disease but many, a medusa of waving tentacles.
From New York Times ● Apr. 27, 2021
A black floor-length gown with undulating straps could have been a poisonous medusa, with coral-red dye bleeding down its multi-layered skirt.
From Washington Times ● Jan. 20, 2020
Then they have taken the form of a medusa.
From "The Thing About Jellyfish" by Ali Benjamin
That role was cut short, however, by Prada's acquisition of the flashy luxury label famous for its Medusa logo, owned by Capri Holdings Limited.
From Barron's ● Sep. 16, 2026
In the first “Furious” episode, she explains how Medusa, the snake-haired demon who turns men to stone, got that way.
From Salon ● Sep. 3, 2026
Only much later would I realize that it wasn’t so much a smorgasbord of vendors as it was the Gorgon Medusa: When one head is removed, more sprout in its place.
From Slate ● Jan. 13, 2026
When the monster emerges in the water tower, a moss-covered, faucet-dripping, steam-seeping laboratory punctuated by a screaming sculpture of Medusa, he’s as old as he is new.
From The Wall Street Journal ● Sep. 30, 2025
They were white cobras tangled among themselves, like the hair of Medusa.
From "The Hot Zone" by Richard Preston
Wearing a toadstool headdress and a skirt embellished with Medusas, El Beh has one of the most striking looks — though the orange ram’s horns on Trebien Pollard are quite something, too.
From New York Times ● Jan. 23, 2022
Bruitparif has installed fifty Medusas in the metropolitan area, and will add many more this summer.
From The New Yorker ● May 6, 2019
The band's final two songs are I Am The King and Medusas "which sounds like it's a Greek myth but is actually about jelly fish".
From BBC ● Feb. 28, 2019
He wielded his clinical obligation like Perseus’s shield, in which a cavalcade of Medusas lost their stony power.
From The Guardian ● Sep. 4, 2015
I followed the hissing and spitting sounds of Medusas hair.
From "The Lightning Thief" by Rick Riordan
“I was able to actually collect some of those medusae last year during the bloom, but rearing gelatinous organisms is pretty difficult,” Stajner said.
From Los Angeles Times ● May 3, 2024
Before they adhere to the ocean’s surface, they live underwater as tiny creatures known as medusae, Wagner said.
From Los Angeles Times ● Mar. 29, 2024
Although beached by-the-wind sailors die in great numbers, they most probably have already reproduced and left thousands of medusae in the sea, according to Wagner.
From Los Angeles Times ● Mar. 29, 2024
It indeed appeared as if the acalephae diminished and the medusae increased in number after passing the 36th degree of south latitude.
From Journals of Two Expeditions of Discovery in North-West and Western Australia, Volume 2 by George Grey
They tell me, R’ooma, that those medusae, or jelly-fishes, have hardly any nervous system, but they have very large heads, if they haven’t brains.
From In Touch with Nature Tales and Sketches from the Life by Gordon Stables
The blue seafaring colonies are themselves asexual, though they bud off tiny transparent medusas that are thought to go to the deep sea and reproduce sexually there, Stajner said.
From Los Angeles Times ● May 3, 2024
Vivid hues that evoked the sea beds and headwear that resembled medusas continued the theme.
From Seattle Times ● Mar. 1, 2022
But not all marine lakes have medusas, the bell-shape organisms you probably think of when the word "jellyfish" comes to mind.
From National Geographic ● Feb. 28, 2018
The ephyra grow into medusas, the mature forms of the jellyfish.
From Textbooks ● Jan. 1, 2015
She remembered having been in that lonely spot once before with Uros; she had seen the strand all covered with bloated bluish medusas, melting away in the sun.
From The Pobratim A Slav Novel by P. Jones
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