To understand why Linux has become so popular, it is helpful to know a little bit about its history. The first version of UNIX was originally developed several decades ago and was used primarily as a research operating system in universities.
Usage Note: Disabled is the clear preference in contemporary American English for referring to people having either physical or mental impairments, with the impairments themselves preferably termed disabilities.
Full Definition of DISABILITY. 1. a: the condition of being disabled. 2. : lack of legal qualification to do something. 3. : a disqualification, restriction, or disadvantage.See disability defined for English-language learners.xamples of DISABILITY. 1  She has learned to keep a positive attitude about her disability. 2  disabilities such as blindness and deafness. 3  a program for children with disabilities. 4  It's a serious disease that can cause disability or death. 5  After he injured his back he had to quit his job and go on disability.