Emergency, emergentology, emergentologist.
No word exists that identifies the branch of knowledge of emergency medicine. The potpourri of names applied to those specializing in emergency medicine creates an aura of amorphism. Emergentology and emergentologist, derived from the Latin emergent, are recommended primarily because they are easily pronounced, appropriately descriptive single words that are obviously related to emergency medicine's foundation word--emergency.
D004635:Emergency Medicine; D009626:Terminology as Topic