Monotremata

noun plural

Mono·​trema·​ta ˌmän-ə-ˈtrem-ət-ə How to pronounce Monotremata (audio) -ˈtrēm- How to pronounce Monotremata (audio)
: an order of egg-laying mammals comprising the platypuses and the echidnas

Browse Nearby Words

monotocous
Monotremata
monotreme
See all Nearby Words

Cite this Entry

“Monotremata.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Monotremata. Accessed 22 Jul. 2025.

Copy Citation

Share

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'

A Guide to Using Semicolons

More Words You Always Have to Look Up

Using Bullet Points ( • )

Words You Always Have to Look Up
See More

Popular in Wordplay

See More

Is 'kryptonite' a real word?

12 Lovely and Unusual Words for the Natural World

Even More Bird Names that Sound Like Insults (and Sometimes Are)

Better Ways to Say 'This Sucks'

8 Words with Fascinating Histories
See More

Popular

See More

'Affect' vs. 'Effect'

Is 'kryptonite' a real word?

12 Lovely and Unusual Words for the Natural World
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?
Missing Letter A daily crossword with a twist
a plate of arepas
Name That Dish! Some mouth-watering food for thought
See All