noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The divided part beyond the pylangium in the aortic trunk of the amphibian heart.
2. 2
   The boat-shaped sorus of certain ferns.

Etymology

From New Latin, from syn- + Ancient Greek ἀγγεῖον (angeîon, “a vessel”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.