massasauga /ˌmasəˈsɔːɡə/ noun1 •The rattlesnake Sistrurus catenatus (formerly Crotalinus catenatus) in the family Viperidae, found in three subspecies.I hope in this paper to contribute something to the knowledge of the Prairie Rattlesnake, or Massasauga (Caudisona tergemina). — 1887 formsmassasaugas