Also found in: Dictionary, Encyclopedia.
Use of a language invented by the person himself.
[idio- + G. lalia, talk]
1. A unique spoken language invented by a person, differing markedly from normal speech and for the most part unintelligible to listeners, so that it is not a useful form of communication; usually a sign of psychosis or mental retardation. 2. A type of spoken communication developed by and used between twins.
[idio- + G. glōssa, tongue, speech]