Proper noun

1. The hypothetical ancestor language or protolanguage of most European and Indian languages.
2. A person who spoke the Proto-Indo-European language.

See also

• Albanian
• Anatolian
• Armenian
• Balto-Slavic
• Celtic

• Germanic
• Greek
• Indo-Iranian
• Italic
• Tocharian

• Wiktionary:About Proto-Indo-European
• Appendix:Proto-Indo-European roots
• Wiktionary Appendix:List of Proto-Indo-European roots

Adjective

1. Of or pertaining to the Proto-Indo-European language, or the people who spoke it.