[ jel-ee-fish ]
/ 藞d蕭蓻l i藢f瑟蕛 /
Save This Word!
See synonyms for: jellyfish / jellyfishes on Thesaurus.com

noun, plural (especially collectively) jel路ly路fish, (especially referring to two or more kinds or species) jel路ly路fish路es.
any of various marine coelenterates of a soft, gelatinous structure, especially one with an umbrellalike body and long, trailing tentacles; medusa.
Informal. a person without strong resolve or stamina; an indecisive or weak person.
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes 鈥渟ky blue鈥?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of jellyfish

1700鈥10; 1910鈥15 for def. 2; jelly + fish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2021

How to use jellyfish in a sentence

British Dictionary definitions for jellyfish

/ (藞d蕭蓻l瑟藢f瑟蕛) /

noun plural -fish or -fishes
any marine medusoid coelenterate of the class Scyphozoa, having a gelatinous umbrella-shaped body with trailing tentacles
any other medusoid coelenterate
informal a weak indecisive person
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for jellyfish

[ j臅l膿-f沫sh鈥 ]

n. pl. jellyfish
Any of numerous marine coelenterates of the class Scyphozoa, some poisonous species of which, notably the Portuguese man-of-war, produce a toxin that can be injected into the skin by nematocysts on the tentacles, causing linear wheals.
Any of various similar or related coelenterates.
The American Heritage庐 Stedman's Medical Dictionary Copyright 漏 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.