Definition - The name for the family of several hundred cognate languages and dialects that includes most of the languages of Europe, as well as many in Asia.

Example -
According to SIL Ethnologue, 12 of the top 20 most-spoken languages are Indo-European. They are:
Marathi, French, Italian, Punjabi, Spanish, English, Hindi, Russian, German, Portuguese, Bengali, and Urdu.

Etymology -
The term was coined by Egyptologist Thomas Young (see OED citation below).

Oxford English Dictionary -
Its first citation is from 1814:
"Another ancient and extensive class of languages, united by a greater number of resemblances than can well be altogether accidental, may be denominated the Indo~european, comprehending the Indian, the West Asiatic, and almost all the European languages."
([Dr. T. Young] in Q. Rev. X. 255 (Adelung's Mithridates))

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