A glossary of terms relevant to disability, accessibility and technology

HTML code that prescribes the structure and formatting of web pages.

A device which enables someone who has a speech or hearing impairment to use a telephone when communicating with someone else who has a TDD/TTY. TDD/TTYS can be used with any telephone, and one needs only a basic typing ability to use them.

A genetic, neurological disorder characterized by repetitious, involuntary body movements and uncontrollable vocal sounds.

A mouse alternative that is basically an upside-down mouse. Useful for some people with mobility impairments because it isolates pointer movement from button clicking.

Open and closed head injuries resulting in impairments in one or more areas, including cognition; language; memory; attention; reasoning; abstract thinking; judgment; problem-solving; sensory, perceptual, and motor abilities; psychosocial behaviour; physical functions; information processing; and speech. The term does not apply to brain injuries that are congenital, degenerative, or induced by birth trauma.