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Definition of Bestseller
1. Noun. A book that has had a large and rapid sale. 
Definition of Bestseller
1. Noun. A book or other product that has sold in large numbers. ¹
¹ Source: wiktionary.com
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1. Noun. A book that has had a large and rapid sale. 
1. Noun. A book or other product that has sold in large numbers. ¹
¹ Source: wiktionary.com