- Involuntary ("parrot-like"), meaningless repetition of a recently heard word, phrase, or song. This condition may be associated with transcortical aphasia; schizophrenia; or other disorders.
Definition from: MeSH via Unified Medical Language System at the National Library of Medicine
- The often pathological repetition of what is said by other people as if echoing them.
Definition from: Merriam-Webster's Medical Dictionary by Merriam-Webster Inc.
See also Understanding Medical Terminology.