pseudocoelomate

noun

pseu·​do·​coe·​lom·​ate ˌsü-dō-ˈsē-lə-ˌmāt How to pronounce pseudocoelomate (audio)
: an invertebrate (such as a nematode or rotifer) having a body cavity that is a pseudocoelom
pseudocoelomate adjective

Word History

First Known Use

1940, in the meaning defined above

Time Traveler
The first known use of pseudocoelomate was in 1940

Rhymes for pseudocoelomate

See All Rhymes for pseudocoelomate

Browse Nearby Words

Pseudocoelomata
pseudocoelomate
pseudoconch
See all Nearby Words

Cite this Entry

“Pseudocoelomate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pseudocoelomate. Accessed 31 Oct. 2025.

Copy Citation

Share

Medical Definition

pseudocoelomate

1 of 2 adjective
pseu·​do·​coe·​lom·​ate ˌsüd-ō-ˈsē-lə-ˌmāt How to pronounce pseudocoelomate (audio)
: having a body cavity that is a pseudocoelom

pseudocoelomate

2 of 2 noun
: a pseudocoelomate organism

More from Merriam-Webster on pseudocoelomate

Britannica.com: Encyclopedia article about pseudocoelomate

Love words? Need even more definitions?

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

Popular in Grammar & Usage

See More

'Affect' vs. 'Effect'

Using Bullet Points ( • )

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

The Difference Between 'i.e.' and 'e.g.'

What’s the difference between ‘cemetery’ and ‘graveyard’?
See More

Popular in Wordplay

See More

Skibidi, Mog & More: Gen Alpha Slang

13 Wonderful Words That You're Not Using (Yet)

Ten More Words from Taylor Swift Songs

Why do we 'bury the lede?'

'Za' and 9 Other Words to Help You Win at SCRABBLE
See More

Popular

See More

'Affect' vs. 'Effect'

Skibidi, Mog & More: Gen Alpha Slang

13 Wonderful Words That You're Not Using (Yet)
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
pastel colored puzzle piece speech bubbles with shadows
Quiz: Find the Missing Link Figure out the word that fits both halves of the ...
See All