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English definition of “star”

star

noun [C]
 
 
/stɑːr/
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. → See also Boston Matrix → Compare cash cow, dog, question mark
-star used to show someone's official opinion of the quality of a place, especially a hotel or restaurant. One-star is the lowest and five-star is the highest: five-star accommodation a four-star hotel
star dot star IT the set of symbols (*.*) that matches all DOS and Windows file names. The first star means "all files", and the second star means "all extensions".
(Definition of star noun from the Cambridge Business English Dictionary © Cambridge University Press)
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