Home › Words › P › paragangliomaparagangliomaparaganglioma · noun — A rare and typically benign neoplasm that can be found in the abdomen, thorax, or head and neck region.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom paraganglion + -oma.nounA rare and typically benign neoplasm that can be found in the abdomen, thorax, or head and neck region.Definitions & examples from Wiktionary (CC BY-SA 3.0).