Wiktionary
n. (context star English) A stellar system that has three stars orbiting around each other; triple star.
Usage examples of "trinary star".
As in the case of a trinary star system, this invalidates a perturbative approach.
Chekov often imagined that this must be what it felt like to ride a starship through an ion storm, or weather the conflicting gravity wells of a trinary star.
With urbane Lieutenant Commander Jim Payne and his freckled co-Helmsman Lieutenant Nedda Green at the controls, we'd been streaking toward the galactic center for little more than a day and a half now, but already distant brilliance from the gleaming trinary star we called the Triad of Asterious was streaming through our forward Hyperscreens.
Little more than three Standard Days later, brilliance from the shining trinary star called Asturious was streaming through automatically dimmed forward Hyperscreens and Commander Terry Rido, the Helmsman, was slowing past Sheldon's Great Velocity Constant into normal Hypospace.
The only planets that had orbited the K-type, trinary star system had broken up some 5,000 years ago.