Definition of "idiomatic"

idiomatic

/ˌɪdi.əˈmætɪk/

adjective
comparative more idiomatic, superlative most idiomatic
1. Pertaining or conforming to idiom, the natural mode of expression of a language.
2. Resembling or characteristic of an idiom.
3. (music) Relating to parts or pieces which are written both within the natural physical limitations of the instrument and human body and, less so or less often, the styles of playing used on specific instruments.
noun
plural idiomatics
1. Synonym of idiom
  Quotations
  A preprocessing (or text normalization) module is necessary as a front end, since TTS [text-to-speech] systems should in principle be able to read any text, including numbers, abbreviations, acronyms, and idiomatics in any format.
  2003, Thiery Dutoit, Yannis Stylianou, “Text-to-Speech Synthesis”, in Ruslan Mitkov, editor, The Oxford Handbook of Computational Linguistics‎, Oxford University Press, page 325