pylangium
/pʌɪˈlan(d)ʒɪəm/Zoology
noun
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.