The Collaborative International Dictionary
Pylangium
Pylangium \Py*lan"gi*um\, n.; pl. Pylangia. [NL., from Gr. ? an entrance + ? a vessel.] (Anat.) The first and undivided part of the aortic trunk in the amphibian heart. -- Py*lan"gi*al, a.
Wiktionary
pylangium
n. (context anatomy English) The first and undivided part of the aortic trunk in the amphibian heart.