Before revision: In humans, the term wingspan also refers to the arm span, which is the distance between the length from one end of an individual's arms (measured at the fingertips) to the other when raised parallel to the ground at shoulder height at a 90º angle.
After revision: In humans, term wingspan also refers to the arm span, which is the distance between the length from one end of an individual's arms (measured at the fingertips) to the other when raised parallel to the ground at shoulder height at a 90º angle.