Proxima

British

/ ˈprɒksɪmə /

noun

Also called: Proxima Centauri. a flare star in the constellation Centaurus that is the nearest star to the sun. It is a red dwarf of very low magnitude. Distance: 4.3 light years See also Rigil Kent

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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.

There are a number of ways to do this, and Germany's Proxima Fusion is attempting one that is considered difficult, even by the extreme standards of the fusion industry.

From BBC • Apr. 20, 2026

Imagine, he says, wanting to send a single paperclip to our neighboring star, Proxima Centauri.

From The Wall Street Journal • Jan. 9, 2026

The closest red dwarf to us is Proxima Centauri.

From Space Scoop • Nov. 28, 2025

The closest Earth-like exoplanet to us -- and possibly the most famous -- is Proxima Centauri b, which is only 4 light-years away.

From Science Daily • May 23, 2024

At some positions in its orbit, Proxima is the closest known star to the Sun—hence its name.

From "Cosmos" by Carl Sagan

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023