Wikipedia - An entrepreneur is a person who has possession of a new enterprise, venture or idea and assumes significant accountability for the inherent risks and the outcome. Entrepreneur is the main person behind a firm or organization; A more generally held theory is that entrepreneurs emerge from the population on demand, from the combination of opportunities and people well-positioned to take advantage of them. An entrepreneur may perceive that they are among the few to recognize or be able to solve a problem.
Research into entrepreneurs - An entrepreneur is an innovator, one that introduces new technologies into the workplace or market, increasing efficiency, productivity or generating new products or services. Some academics say the entrepreneur is an organiser of factors or production that acts as a catalyst for economic change. Some argue that the entrepreneurs are highly creative individual that imagines new solutions providing new opportunities for reward.
There is a growing body of work that shows that entrepreneurial behavior is dependent on social and economic factors. The research into female entrepreneurs illustrates this quite clearly. "Countries which have healthy and diversified labor markets or stronger safety nets show a more favorable ratio of opportunity to necessity-driven women entrepreneurs." What those factors are varies widely, based on local needs.
Social Entrepreneur - Social entrepreneurs act within a market aiming to create social value through the improvement of goods and services offered to the community. Their main aim is to help offer a better service improving the community as a whole and are predominately run as non profit schemes.
Serial Entrepreneur - A serial entrepreneur is one who continuously comes up with new ideas and starts new businesses. As opposed to a typical entrepreneur, who will often come up with an idea, start the company, and then see it through and play an important role in the day to day functioning of the new company, a serial entrepreneur will often come up with the idea and get things started, but then give responsibility to someone else and move on to a new idea and a new venture. This can be a good thing if the individual has lots of unique ideas and is the best one suited to get each one started, but can be a bad thing if the individual stops putting time into a company that needs his or her help, in order to try to move forward with a new idea that may or may not succeed.