See also: Bess, béss, and Bëss English Proper noun BESS (military, US) Initialism of Basic Enlisted Submarine School. (physics) Initialism of Balloon-borne Experiment with Superconducting Spectrometer. Noun BESS (uncountable) (medicine) Initialism of biportal endoscopic spine surgery. Anagrams BSes, b******ses, SEbS, SSBE, ESBsWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads