Hirt's law

Etymology
Named after Hermann Hirt, who postulated it in 1895.

Proper noun

 * 1) A Balto-Slavic sound law stating that the inherited Proto-Indo-European stress would retract to a non-ablauting pretonic vowel or a syllabic sonorant if it was followed by a consonantal (non-syllabic) laryngeal that closed the preceding syllable.