The process of creating products that are usable by people with the widest possible range ofabilities, operating within the widest possible range of situations; whereas accessibility primarily refers to design for people with disabilities.

Henry, S. L., Abou-Zahra, S., and Brewer, J. (2014). The role of accessibility in a universal web. In Proceedings of the 11th Web for All Conference(W4A ’14). ACM: New York. doi#10.1145/2596695.2596719.