di·​cot·​y·​le·​don | \ ˌdī-ˌkä-tə-ˈlē-dᵊn How to pronounce dicotyledon (audio) \
plural dicotyledons

Definition of dicotyledon

: any of a class or subclass (Magnoliopsida or Dicotyledoneae) of angiospermous plants that produce an embryo with two cotyledons and usually have floral organs arranged in cycles of four or five and leaves with reticulate venation

called also dicot

— compare monocotyledon

Other Words from dicotyledon

dicotyledonous \ ˌdī-​ˌkä-​tə-​ˈlē-​də-​nəs How to pronounce dicotyledonous (audio) \ adjective

First Known Use of dicotyledon

1725, in the meaning defined above

History and Etymology for dicotyledon

New Latin

Keep scrolling for more

Learn More about dicotyledon

Time Traveler for dicotyledon

Time Traveler

The first known use of dicotyledon was in 1725

See more words from the same year

Statistics for dicotyledon

Last Updated

3 Sep 2020

Cite this Entry

“Dicotyledon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dicotyledon. Accessed 27 Sep. 2020.

More from Merriam-Webster on dicotyledon

Britannica.com: Encyclopedia article about dicotyledon

Comments on dicotyledon

What made you want to look up dicotyledon? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

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