Reconstruction:Proto-Slavic/prostorьnъ

Etymology
From.

Adjective

 * 1) vast, spacious

Descendants

 * East Slavic:
 * South Slavic:
 * West Slavic:
 * South Slavic:
 * West Slavic:
 * South Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic: