Meaning of labialization in English:

labialization

Pronunciation /ˌleɪbɪəlʌɪˈzeɪʃn/

noun

(also labialisation)
Phonetics
  • The action of making a speech sound labial in pronunciation or articulation, as a secondary articulatory feature; the fact of a speech sound being labialized in this way.

Origin

Mid 19th century; earliest use found in Alexander Ellis (1814–1890), phonetician and mathematician. From labialize + -ation, perhaps after German Labialisierung.