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.
The culprit is an unseen companion star that is pulling in material from its larger neighbor.
From Science Daily • May 1, 2026
While observing a repeating FRB roughly 2.5 billion light-years from Earth, researchers detected a unique signal that pointed to the presence of a nearby companion star.
From Science Daily • Jan. 28, 2026
Gas from the companion star continuously flows toward the white dwarf.
From Science Daily • Jan. 8, 2026
The companion star travels far from the system before plunging back through the dust-filled inner region.
From Science Daily • Dec. 17, 2025
"Except that we saw that companion star when we stopped back there, half an hour ago," said Fuller.
From Islands of Space by Campbell, John Wood
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.
