Glossary

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

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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,…