Definition of mesomyodian in US English:

mesomyodian

adjective

Ornithology
  • Of a bird: having a syrinx whose muscles are attached to the middle of the bronchial semi-rings; specifically (in Garrod's scheme) belonging to the division Mesomyodi of passerine birds, closely corresponding to the suborder Deutero-Oscines (the suboscine passerines).

Origin

Late 19th century. From scientific Latin Mesomyodi, former group name + -an.

Pronunciation

mesomyodian

/ˌmɛsə(ʊ)mʌɪˈəʊdɪən/