An alpha male or alpha female in a biological community is the leader and one whom others in a group look to for direction.
In the animal kingdom, the terms alpha, beta, and gamma male are commonly used to describe an individual's position within a social hierarchy. In social hierarchies, alpha male are the highest-ranking males within a social group, followed by beta, and then gamma males.[1]
In business an alpha can be any of four types of leaders: commander, visionary, strategist, executor. Alpha Male at Work