The Indo-European languages have a history of over 3,000 years. Their unattested, reconstructed ancestor, Proto-Indo-European, is believed to have been spoken well before 4000 bc in a region somewhere to the north or south of the Black Sea. The family comprises twelve branches: Indic (including Sanskrit and its descendants), Iranian, Anatolian (including Hittite and other extinct languages), Armenian, Hellenic (Greek), Albanian (or Illyrian), Italic (including Latin and the Romance languages), Celtic, Tocharian (an extinct group from central Asia), Germanic (including English, German, Dutch, and the Scandinavian languages), Baltic, and Slavic (including Russian, Czech, Bulgarian, and Serbo-Croat).
In·do-Eu·ro·pe·an • adj. of or relating to the family of languages spoken over the greater part of Europe and Asia as far as northern India. ∎ another term for Proto-Indo-European.• n. 1. the ancestral Proto-Indo-European language. ∎ the Indo-European family of languages.2. a speaker of an Indo-European language, esp. Proto-Indo-European.