资料来源 : Webster's Revised Unabridged Dictionary (1913)

Ectobronchium \Ec`to*bron"chi*um\, n.; pl. {Ectobronchia}. [NL.
   See {Ecto-}, and {Bronchia}.] (Anat.)
   One of the dorsal branches of the main bronchi in the lungs
   of birds.