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
Learn More About Sirius
Statistics for Sirius
Look-up Popularity
Cite this Entry
“Sirius.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Sirius. Accessed 17 Aug. 2022.
Style: MLA
MLA
Chicago
APA
Merriam-Webster
Chicago
APA
Merriam-Webster
Test Your Vocabulary
Challenging Words You Should Know
-
- Often used to describe “the march of time,” what does inexorable mean?
Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
What Are You Wearing?
Roll up your sleeves and identify these garments
Take the quiz
-
Name That Animal: Volume 2
Can you tell a meerkat from a wombat?
Take the quiz
-
Name That Thing
Test your visual vocabulary with our 10-question ...
Take the quiz
-
Spelling Bee Quiz
Can you outdo past winners of the National Spelli...
Take the quiz
Share Sirius
Time Traveler for Sirius
The first known use of Sirius was in the 14th century
See more words from the same century