decagon

noun deca·gon \ ˈde-kə-ˌgän \

Definition of decagon

:a plane polygon of 10 angles and 10 sides

Illustration of decagon

Origin and Etymology of decagon

New Latin decagonum, from Greek dekagōnon, from deka- deca- + -gōnon -gon


DECAGON Defined for Kids

decagon

noun deca·gon \ ˈde-kə-ˌgän \

Definition of decagon for Students

:a closed figure having ten angles and ten sides

Learn More about decagon


Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

to praise usually to excess

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ

Love words? Need even more definitions?

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