Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of numerous usually free-swimming marine coelenterates of the class Scyphozoa, characteristically having a gelatinous, tentacled, often bell-shaped medusoid stage as the dominant phase of its life cycle.
  • n. Any of various similar or related coelenterates.
  • n. Informal One who lacks force of character; a weakling.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance.

from the GNU version of the Collaborative International Dictionary of English

  • n. Any one of the acalephs, esp. one of the larger species, having a jellylike appearance. See medusa and acaleph.

from The Century Dictionary and Cyclopedia

  • n. A popular name of many kinds of acalephs, medusas, sea-blubbers, or sea-nettles: so called from the soft, gelatinous structure.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans
  • n. large siphonophore having a bladderlike float and stinging tentacles

Etymologies

Sorry, no etymologies found.

Examples

  • The term "jellyfish" often is used to denote weakness.

    chron.com Chronicle

  • The term "jellyfish" encompasses two different groups: Cnidaria, animals

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  • From the edge, which emit green light when the jellyfish is agitated, Shimomura isolated a protein.

    The Nobel Prize in Chemistry 2008 - Illustrated Presentation

  • The Telegraph reports that: "An 'immortal' jellyfish is swarming through the world's oceans, according to scientists."

    The 'Immortal' jellyfish

  • This deadly species of jellyfish is only found in certain areas of the world, mainly in Australia. 6 There have been over 60 deaths from C. fleckeri in tropical Australia over the last century. 11 The early systemic symptoms of envenomation include dizziness, confusionand agitation and unconsciousness and can occur within minutes.

    Fish poisonings and envenomations

  • The Chironex fleckeri of the chirodropid species, also known as the sea wasp or the box jellyfish, is considered the most deadly jellyfish in the world. 3 Stings from its tentacles cause an erythematous whipped appearance on the skin and may result in blackening and necrosis in the area.

    Fish poisonings and envenomations

  • The jellyfish is part of the cnidarians, the family relationship of which is depicted in the figure on the left (click on image to view it in full scale).

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  • They were far out of the course of steamers, and saw no craft of any kind, save fleets of "Portuguese men-o'-war," as Joe Swanson and the others called the jellyfish squadrons.

    The Pirate Shark

  • It's a certain kind of jellyfish, which is collected, then laid out in the sun with salt, until it solidifies.

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  • The jellyfish is a skydiver whose shoot didn't open.

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