Dictionary

jellyfish

noun jel·ly·fish \ˈje-lē-ˌfish\

: a sea animal that has a very soft body and that can sting

Full Definition of JELLYFISH

1
a :  a free-swimming marine coelenterate that is the sexually reproducing form of a hydrozoan or scyphozoan and has a nearly transparent saucer-shaped body and extensible marginal tentacles studded with stinging cells
b :  siphonophore
c :  ctenophore
2
:  a person lacking backbone or firmness
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Examples of JELLYFISH

  1. <a jellyfish who was afraid to tell her boss that her latest brainstorm was just plain bad>

Illustration of JELLYFISH

First Known Use of JELLYFISH

1841

Related to JELLYFISH

JELLYFISH Defined for Kids

jellyfish

noun jel·ly·fish \ˈje-lē-ˌfish\

Definition of JELLYFISH for Kids

:  a free-swimming sea animal related to the corals that has a nearly transparent jellylike body shaped like a saucer and tentacles with stinging cells
Medical Dictionary

jellyfish

noun jel·ly·fish \ˈjel-ē-ˌfish\

Medical Definition of JELLYFISH

:  a free-swimming marine coelenterate that is the sexually reproducing form of a hydrozoan or scyphozoan and has a nearly transparent saucer-shaped body and extensible marginal tentacles studded with stinging cells

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