sub·​dwarf ˈsəb-ˌdwȯrf How to pronounce subdwarf (audio)
: a small hot star containing few elements heavier than helium and having lower luminosity than a main-sequence star of similar temperature

Word History

First Known Use

1939, in the meaning defined above

Time Traveler
The first known use of subdwarf was in 1939

Dictionary Entries Near subdwarf

Cite this Entry

“Subdwarf.” Dictionary, Merriam-Webster, Accessed 29 Mar. 2023.

More from Merriam-Webster on subdwarf

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

A Good Old-Fashioned Quiz

Name That Thing

You know what it looks like… but what is it called?

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?