character /m̩̄/ spelling unconfirmed
(uppercase)
Definitions
  1. A syllabic letter ⟨m⟩ with mid tone letter
Other entries with this spelling
Wiktionary records 2 entries spelled “m̄”. You're reading one of them; here are the others.
Source: Wiktionary, where this word is spelled “m̄”. Reference: en-m̄-yo-character-UcTQcAdV