Dictionary.com
Thesaurus.com

A star

American  

noun

Astronomy.
  1. a blue to white star, as Altair, Sirius, or Vega, having a surface temperature between 7500 and 10,000 K and an absorption spectrum dominated by Balmer-series lines of hydrogen.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

A star with very few of these elements must have formed before most supernovae occurred, meaning it likely belongs to the earliest generations of stars in the universe.

From Science Daily Apr. 4, 2026

A star quarterback fizzles, a new hire doesn’t work out—and so it’s back to the basics.

From Barron's Dec. 12, 2025

A star is someone who is in my face, because I want them to challenge me in different ways.

From The Wall Street Journal Nov. 6, 2025

A star of BBC show Gladiators has announced the death of his son days after he was born prematurely.

From BBC Apr. 9, 2025

A star is a kind of cosmic kitchen inside which atoms of hydrogen are cooked into heavier atoms.

From "Cosmos" by Carl Sagan

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training