The phrase "a significantly expanded range" is correct and usable in written English.
You can use it when describing an increase in the variety or scope of something, such as products, services, or options.
Example: "The new software update offers a significantly expanded range of features that enhance user experience."
Alternatives: "a greatly increased range" or "a notably broader range."
In addition to portraying species representation accurately, the IVT dataset displays a significantly expanded dynamic range.
WASHINGTON -- Federal and state prosecutors are in advanced negotiations with Bank of America in pursuit of a settlement that would forgive the bank for a broad range of past mortgage abuses in exchange for fines that would finance a significantly expanded relief program for struggling homeowners, according to three people with direct knowledge of the matter.
Knott also carries a solid Belgian range, various German pilsners and wheats, and a newly expanded range of American bottles.
Industry trends over the last decade or so have significantly expanded the range of possibilities in terms choosing a concept for your cocktail menu.
Marvel and parent Disney have significantly expanded the range of stories and genres that work within the brand.
Improvement of pre-existing technologies, such as the miniaturization of ultrasound devices, has significantly expanded the range of use for these devices.
Over the last decades the golden jackal (Canis aureus) has significantly expanded its range throughout Southeast and Central Europe, and the Balkan Peninsula is considered to be a core area of the species distribution in this part of the range.
The latter is a two-CD set, a long-in-coming sequel to the 1994 two-disc "The Beatles: Live At the BBC" release that significantly expanded the range of Beatles recordings commercially available.
The piperatoria are rare examples of this type of Roman silverware, and according to Johns the Hoxne finds have "significantly expanded the date range, the typology and the iconographic scope of the type".
This is important because the nearest record of a Dryas' monkey is 400km to the west, meaning, if confirmed, the discovery would significantly expand the range of a primate considered critically endangered.
