1. To rank or be included alongside other like people or things within some limited group, list, or category. Her discovery numbers among the most important contributions in all of modern medical science. During the prime of his career, Jones numbered among the best boxers in the world.

2. To include or rank someone or something alongside other like people or things within some limited group, list, or category. In this usage, a noun or pronoun is used between "number" and "among." I can honestly say that I would number this book among my favorites of all time. He numbers General McCarthy among the finest military leaders the country has ever seen.