antarctic circle

noun, often capitalized A&C

Definition of antarctic circle

: the parallel of latitude that is approximately 66¹/₂ degrees south of the equator and that circumscribes the southern frigid zone

First Known Use of antarctic circle

1556

in the meaning defined above

See Words from the same year
NEW! Time Traveler


Seen and Heard

What made you want to look up antarctic circle? 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 pay off by making regular payments

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a-closeup-of-a-sunflower
  • Which of the following words means “of or relating to summer”?
Spell It

Can you spell these 10 commonly misspelled words?

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!