Definition of "co-founders" [co-founders]

• Plural form of co-founder. (noun)

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• "KIPP co-founders Mike Feinberg and Dave Levin said they share my concern about their new approach freezing out middle schoolers who need them and promise to admit older students if their families continue to enroll them."
• "KIPP co-founders Mike Feinberg and Dave Levin said they share my concern about their new approach freezing out middle-schoolers who need them and promise to admit older students - and open more middle schools - if families demand it."
• "Frieze's co-founders also announced Thursday that another initiative, Frieze Masters, will accompany the original Frieze fair in London."