labialization

noun

1. (countable, uncountable)A secondary articulatory feature of usually consonants that involves the contraction or rounding of the lips (labia) during pronunciation.

   “These labialized stops are of course nothing but positionally determined allophones of the [t] and the [k] phoneme, and their labialization is non-distinctive”

   “The second question concerns the reasons for the labialization of this suffix in [1.3] - in the case of artukluk one immediately thinks of an assimilation (*u - ı > u - u)”