Mental or Behavioral Dysfunction
language disorder
lan·guage dis·or·der [ lang-gwij dis-awr-der ]
Subclass of:
Communication impairment
Definitions related to language disorders:
  • A category of disorders characterized by an impairment in the development of an individual's language capabilities, which is in contrast to his/her non-verbal intellect.
    NCI
    U.S. National Cancer Institute, 2021
  • Conditions characterized by deficiencies of comprehension or expression of written and spoken forms of language. These include acquired and developmental disorders.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (language impairment) Language impairment is a deficit in comprehension or production of language that includes reduced vocabulary, limited sentence structure, or impairments in written or spoken communication. Language abilities are substantially and quantifiably below age expectations.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.