idioglossia
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idioglossia
[‚id·ē·ə′gläs·ē·ə] (psychology)
Speech or other vocalizations unique to an individual and generally incomprehensible to others; may be normal, as during childhood development, or representative of a pathological process.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.