He became a medical student at Guy's Hospital, and graduated M.B.
Moliere's medical student accounts for it by a soporific principle contained in the opium.
A good analogy would be a medical student in training to be a surgeon would need to know the lingo in an operating room.
The world's first sub-four-minute miler, Roger Banister, was a medical student at St Mary's Hospital, Paddington.
Hooker had a smoother transition from medical student to ship's naturalist.