Designating those Indo-European languages, including the Indo-Iranian, Armenian, and Balto-Slavic subfamilies, in which original palatal velar stops became fricatives (as k' > s or ) and labiovelar stops became plain velars (as kw > k).
ETYMOLOGY:
Avestan satm, hundred (a word whose initial sound illustrates the change). See dek in Appendix I.
sä
t
m
) and labiovelar stops became plain velars (as kw > k). 
in Appendix I.
