Sirius

noun

Sir·​i·​us ˈsir-ē-əs How to pronounce Sirius (audio)
: a star of the constellation Canis Major that is the brightest star in the heavens

called also Dog Star

Word History

Etymology

Middle English, from Latin, from Greek Seirios

First Known Use

14th century, in the meaning defined above

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

Dictionary Entries Near Sirius

Cite this Entry

“Sirius.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Sirius. Accessed 25 May. 2024.

Kids Definition

Sirius

noun
Sir·​i·​us ˈsir-ē-əs How to pronounce Sirius (audio)
: the brightest star in the night sky

called also Dog Star

Etymology

Middle English Sirius "the brightest star," from Latin Sirius (same meaning), from Greek Seirios "the brightest star," literally, "burning, scorching" see Word History at dog days

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