[in-doh-yoo
r-uh-pee-uhn] 
| 1. | a large, widespread family of languages, the surviving branches of which include Italic, Slavic, Baltic, Hellenic, Celtic, Germanic, and Indo-Iranian, spoken by about half the world's population: English, Spanish, German, Latin, Greek, Russian, Albanian, Lithuanian, Armenian, Persian, Hindi, and Hittite are all Indo-European languages. Compare family (def. 14). |
| 2. | Proto-Indo-European (def. 1). |
| 3. | a member of any of the peoples speaking an Indo-European language. |
| 4. | of or belonging to Indo-European. |
| 5. | speaking an Indo-European language: an Indo-European people. |