Definition from Wiktionary, the free dictionary
labialization (plural labializations)
- (linguistics) A secondary articulatory feature of usually consonants that involves the contraction or rounding of the labia during pronunciation.
1935, Bernard Bloch, American Speech:
- These labialized stops are of course nothing but positionally determined allophones of the [t] and the [k] phoneme, and their labialization is non-distinctive