prebilabial
adjUK /ˌpɹiːbaɪˈleɪbɪəl/ · US /ˌpɹiːbaɪˈleɪbiəl/
Etymology From pre- + bilabial.
1
Of a speech sound Occurring immediately before a bilabial consonant, i.e. before /m/, /p/, /b/, /ɸ/, /β/, /β̞/, /ʙ/, or /ʘ/.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.