• Dictionary
• Thesaurus
• Scrabble
• Spanish Central
• Learner's Dictionary

# heptagon

play
noun hep·ta·gon \ˈhep-tə-ˌgän\

## Simple Definition of heptagon

• mathematics : a flat shape that has seven sides and seven angles

Source: Merriam-Webster's Learner's Dictionary

## Full Definition of heptagon

1. :  a polygon of seven angles and seven sides

## Origin and Etymology of heptagon

Greek heptagōnos heptagonal, from hepta + gōnia angle — more at -gon

First Known Use: 1570

## heptagon

play
noun hep·ta·gon \ˈhep-tə-ˌgän\

## Definition of heptagon for Students

1. :  a closed geometric figure having seven angles and seven sides

## Seen and Heard

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

#### vamoose

play

to depart quickly

Get Word of the Day daily email!

#### WORD GAMES

Take a 3-minute break and test your skills!

Which is the correct spelling?

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ

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

TAKE THE QUIZ

#### Words at Play

##### Dabbing

New uses of an old word

##### Is It 'Autumn' or 'Fall'?

Why does this season have two different names?

##### 'Dumbledore', 'Hippogriff', and 11 More Real Words from Harry Potter

The history behind Harry Potter

##### The Original Hipsters

Hint: they carried things on their hips

##### How to Use the Subjunctive in English

If I were you, I'd watch this

##### How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

##### Irregardless

It is in fact a real word (but that doesn't mean you should use it).

##### Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

#### Word Games

##### Difficult Spelling Words Quiz

Can you spell these 15 tricky spelling words?

Take the quiz
##### Who Knew?

Take this quiz and discover 12 words for things you didn't know had words.

Take the quiz
##### Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz