ultraluminous infrared galaxy

ultraluminous infrared galaxy

[¦əl·trə¦lü·mə·nəs ‚in·frə‚rəd ′gal·ik·sē] (astronomy) One of a class of galaxies that emit intense radiation at infrared wavelengths, 100 times or more as much as the Milky Way Galaxy. Abbreviated ULIRG.