in the Growth/Share Matrix, a company or product with quite a large share of a market that is growing quickly
* * *
Ⅰ.
star UK US /stɑːr/ noun [C]
► a symbol with four or more points. A system of stars is used to show someone's official opinion of the quality of a product or place: »
Vehicles with one star are four times more likely to roll over in a crash than vehicles with five stars.
»Organizations are awarded star ratings to indicate the effectiveness of their safety programmes.
► someone or something that is the best in a group, an organization, etc.: »
Business stars were joined by scores of private investors, who snapped up shares in quoted operators.
»He's now one of the rising stars of the company.
► MARKETING in the Boston Matrix, a product or company with a large share in a market that is growing very fast: »
If a star can maintain its large market share, it will become a cash cow when the market growth rate declines.
Ⅱ.
star UK US /stɑːr/ adjective [before noun] INFORMAL
► better or more important than others: star banker/manager/performer »
The consumer sector stands out as a star performer in the country's economy.
Financial and business terms. 2012.