It was customary, in the early Empire, for deceased Emporers to be voted God status by the Senate (Gaius Caesar Augustus Germanicus AKA Caligula, "Little Boots" was one who had the posthumous honor conferred upon him prehumously). This process was known by the Greek word apotheosis. Claudius stuttered and from his lips apotheosis would have sounded something like apocolocyntosis (the th in apotheosis was not pronounced like the Germanic þ, a sound not present in Classical Greek or Latin). A reasonable translation of apocolocyntosis would be "pumpkinification". The Seneca work was a spoof on the eulogistic works accompanying imperial deaths, playing on both Claudius's speech defects and his physical appearance. He had polio as a youth and was highly developed in his arms and shoulders but withered in his legs.

You could google "apocolocyntosis" I don't believe that the word is used in any other context.