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.

"I remember a few people said that the place where Proxima is today was impossible," says Francesco Sciortino, the co-founder and CEO of Proxima Fusion.

From BBC • Apr. 20, 2026

Among these are well-known exoplanets such as Proxima Centauri b, TRAPPIST-1f, and Kepler 186f, along with lesser-known candidates like TOI-715 b.

From Science Daily • Mar. 25, 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

Do we have any hope of leaving Earth and traversing the immense distances even to Proxima Centauri in convenient periods of time?

From "Cosmos" by Carl Sagan

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