Cepheid

noun
Ce·​phe·​id | \ ˈse-f(ē-)id How to pronounce Cepheid (audio) , ˈsē- How to pronounce Cepheid (audio) \

Definition of Cepheid

: any of a class of variable stars whose very regular light variations are related directly to their intrinsic luminosities and whose apparent luminosities are used to estimate distances in astronomy

First Known Use of Cepheid

circa 1903, in the meaning defined above

History and Etymology for Cepheid

International Scientific Vocabulary, from Cepheus

Keep scrolling for more

Learn More about Cepheid

Time Traveler for Cepheid

Time Traveler

The first known use of Cepheid was circa 1903

See more words from the same year

Statistics for Cepheid

Cite this Entry

“Cepheid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Cepheid. Accessed 27 Oct. 2020.

Comments on Cepheid

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

WORD OF THE DAY

Test Your Vocabulary

Namesakes Word Quiz

  • a citrus fruit possibly named after a person
  • Which of the following is a fruit named after a Moroccan seaport?
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!