- the nearest star to the sun at a distance of 4.3 light-years, part of the Alpha Centauri triple-star system located in the constellation Centaurus.
Origin of Proxima Centauri
< New Latin: nearest (star) of Centaurus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- See under Alpha Centauri.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.