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This glossary covers a wide range of topics and includes terms that describe people, technology, concepts, and more. Some of the terms, marked by this icon , are widely considered to be

This term is generally agreed to be offensive toward or a person or group of people. We strongly recommend you do not use this term and instead use a term not usually thought to be offensive. While it is possible that some people will not be offended by this term, just as some people will be offended by other terms when no harm is intended, it is best to avoid. Remember that what is considered offensive can also change over time, by scenario, and by relationship. We provide this library of terms for informational purposes and we welcome feedback to help us get it right.


  • Refreshable Braille displays

    They are called refreshable because the unit comprises a line of pins that move up and down to display the Braille...

  • Rehabilitation Act of 1973

    The Rehabilitation Act of 1973 was the first legislation to address the notion of equal access for individuals...

  • Retard

    Derogatory term to describe people with intellectual disabilities (often used as an insult).

  • Reasonable Accommodation

    Any change to the environment, equipment, processes, or practices that improves accessibility or helps an...