"Bachelor of Medicine, Bachelor of Surgery, or in Latin: Medicinae Baccalaureus, Baccalaureus Chirurgiae (abbreviated in many ways, e.g. MBBS, MBChB, MBBCh, MB BChir (Cantab), BM BCh (Oxon), BMBS), are the two first professional degrees in medicine and surgery awarded upon graduation from medical school by universities."

Source - Wikipedia