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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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ARASAAC(also: Aragonese Portal of Augmentative and Alternative Communication)
A publicly funded open pictogram library maintained by the Government of Aragon, Spain, providing nearly 12,000 colour and black-and-white pictograms licensed under Creative Commons (BY-NC-SA). ARASAAC symbols are widely used worldwide in augmentative and alternative…
Aided AAC(also: Aided Augmentative and Alternative Communication)
The branch of Augmentative and Alternative Communication that relies on an external tool to produce or carry the message — ranging from low-tech paper communication boards and picture-exchange cards to high-tech tablet apps and dedicated speech-generating devices accessed via…
Aided Language Stimulation(also: Aided Language Modeling, Aided Language Input, ALgS)
A communication intervention technique in which a conversation partner models language on an AAC device while speaking, pointing to symbols on the learner's communication system as they talk. This includes describing their own actions, narrating the learner's actions, providing…
Assistive Communication(also: Assisted Communication)
Any method, device, or system used to supplement or replace natural speech and writing for people who have difficulty with spoken or written language. Assistive communication encompasses a broad range of approaches, from low-tech solutions like picture boards and communication…
Augmented Communicator(also: AC, AAC User, Aided Communicator)
A person who uses augmentative and alternative communication (AAC) technology to express themselves, typically because a disability affects their ability to produce speech. Augmented communicators use devices ranging from simple picture boards to sophisticated speech-generating…

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