A word used to describe EmbeddedDomainSpecificLanguage''''''s by some experts who believe 'embedded' implies something different than is intended.  Opposes 'ExternalDomainSpecificLanguage'.  See the linked page for further discussion.

See also an article by MartinFowler for an early (possibly initial) use of this terminology: http://martinfowler.com/articles/languageWorkbench.html#ProsAndConsOfLanguageOrientedProgramming