What's a fintech? 43 insiders at powerful Wall Street firms, hot startups, and big investors weigh in on the buzzy but hard-to-define term.

· Business Insider polled 43 executives across the financial services world to find an answer to a seemingly simply question: what is the definition of fintech?
· Fintech first entered the mainstream vernacular roughly a decade ago, but with every passing year the term gets harder and harder to define.
· We split the...