epilanguage noun2 •A second language used regularly for some purpose or purposes (such as for scholarship and scientific research).Finally, we might consider the emotional investment of certain groups in the use of particular languages or 'epilanguages'. — 2012 •A more subconscious, self-imposed, form of metalanguage, determining the form in which a message will be uttered.Critical expressions may therefore be statements or entrenched beliefs, or even paradigms, which belong to the epilanguage or background knowledge of sciences. — 2012 formsepilanguages