Definition of mystacial in English:

mystacial

(also mystachial)

adjective

Zoology
  • Relating to or situated on the upper lip; = moustachial.

Origin

Late 18th century. From ancient Greek μυστακ-, μύσταξ moustache + -ial.

Pronunciation

mystacial

/mɪˈsteɪsɪəl//mɪˈsteɪʃl/