Sirius

noun
Sir·i·us | \ˈsir-ē-əs \

Definition of Sirius 

: a star of the constellation Canis Major that is the brightest star in the heavens

called also Dog Star

First Known Use of Sirius

14th century, in the meaning defined above

History and Etymology for Sirius

Middle English, from Latin, from Greek Seirios

Keep scrolling for more

Learn More about Sirius

Dictionary Entries near Sirius

Siricidae

Siriono

siris

Sirius

sirkar

sirkeer

sirki

Statistics for Sirius

Look-up Popularity

Time Traveler for Sirius

The first known use of Sirius was in the 14th century

See more words from the same century

More from Merriam-Webster on Sirius

See words that rhyme with Sirius

Comments on Sirius

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

WORD OF THE DAY

to reject or criticize sharply

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

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!