boukólos rule

Etymology
The rule is named after an example of such a dissimilation: the, which is ultimately from , from +.

Noun

 * 1)  A rule of the Proto-Indo-European reconstructed language that states that a labiovelar stop (*kʷ, *gʷ, *gʷʰ) dissimilates to an ordinary velar stop (*k, *g, *gʰ) next to the vowel *u or its corresponding glide *w.