Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Unaided AAC(also: Unaided Augmentative and Alternative Communication, Body-Based AAC)
- The branch of Augmentative and Alternative Communication that relies solely on the user's body — gestures, facial expressions, vocalisations, manual signs, body orientation — without an external device. Unaided AAC is fast, always available, and naturally expressive; families,…
- Utterance-Based System(also: Utterance-Based AAC, Prestored Message System)
- A type of augmentative and alternative communication (AAC) system that uses prestored phrases, sentences, or complete utterances rather than requiring users to construct messages word-by-word or letter-by-letter. Utterance-based systems organise prestored text hierarchically,…
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