Definition of pylangium in US English:

pylangium

noun

Zoology
  • In amphibians and some fishes: the first or proximal part of the conus arteriosus which leads out from the ventricle of the heart.

Origin

Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From ancient Greek πύλη gate + -angium.

Pronunciation

pylangium

/pʌɪˈlan(d)ʒɪəm/