The story
Named after Russian mathematician Andrey Markov (Андре́й Андре́евич Ма́рков) (1856—1922), who researched the processes.
Etymology from Wiktionary, CC BY-SA 4.0.
semi-Markov process
Today it means: A generalization of the Markov chain in which the distribution of the amount of time that the process spends in a given state is permitted to be nonexponentially (generally) distributed. Full definition →