Cepheus

noun

Ce·pheus ˈsē-ˌfyüs

ˈsē-fē-əs

ˈse-

: a constellation between Cygnus and the north pole

Word History

Etymology

Latin (genitive Cephei), from Greek Kēpheus

First Known Use

1563, in the meaning defined above

Time Traveler

The first known use of Cepheus was in 1563

See more words from the same year

Browse Nearby Words

Cephenemyia

Cepheus

Cephus

See all Nearby Words

Cite this Entry

Style

“Cepheus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Cepheus. Accessed 14 Sep. 2025.

Copy Citation

Kids Definition

Cepheus

noun

Ce·pheus ˈsē-ˌfyüs

ˈsē-fē-əs

: a group of stars between Cygnus and the north pole

Popular in Grammar & Usage

Using Bullet Points ( • )

Merriam-Webster’s Great Big List of Words You Love to Hate

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

A Guide to Using Semicolons

The Difference Between 'i.e.' and 'e.g.'

Popular in Wordplay

Cepheus

noun

Word History

Browse Nearby Words

Cite this Entry

Kids Definition

More from Merriam-Webster on Cepheus

More from Merriam-Webster

Can you solve 4 words at once?

Can you solve 4 words at once?

Word of the Day

perpetuity