companion star
Americannoun
Etymology
Origin of companion star
First recorded in 1775–85
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.
These long-term observations revealed the effects of a companion star that had previously been suspected but not confirmed.
From Science Daily ● Jan. 10, 2026
From Earth's perspective, Betelgeuse is currently eclipsing its companion star.
From Science Daily ● Jan. 10, 2026
The newly detected wake provides the strongest proof yet that a companion star is actively disturbing the atmosphere of this red supergiant.
From Science Daily ● Jan. 10, 2026
Gas from the companion star continuously flows toward the white dwarf.
From Science Daily ● Jan. 8, 2026
In 1842, Otto Struve discovered that the companion star is itself double, and round it there gravitates a sapphire sun, which is believed to accomplish a revolution of its orbit in about 500 years.
From The Astronomy of Milton's 'Paradise Lost' by Orchard, Thomas Nathaniel
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
