1) Relating to idioglossia 
Relating to idioglossia. ... (05 Mar 2000) ... 
Type: Term Pronunciation: id′ē-ō-glot′ik Definitions: 1. Relating to idioglossia.
idioglossia, idioglottic, idiolalia 1. A developmental speech defect in which a child substitutes different sounds for the correct ones, so that speech is intelligible only to parents or others closely involved with the child. 2. The invention and use of language by a child or closely involved siblings such as twins that is unintelligible to anyone...