Memoryless isn't even something I came up with, it's practically in the first sentence of everyone's description of the Markov property, e.g.: https://en.wikipe

Memoryless isn't even something I came up with, it's practically in the first sentence of everyone's description of the Markov property, e.g.: https://en.wikipedia.org/wiki/Markov_chain#Definition https://en.wikipedia.org/wiki/Markov_chain#Definition Also see: https://en.wikipedia.org/wiki/Memorylessness https://en.wikipedia.org/wiki/Memorylessness ("memorylessness refers to the Markov property") All I'm doing is suggesting just using the existing description as the name itself. Even if there were some cases where it wouldn't apply, though, it wouldn't really matter. Fourier domain also applies to things other than time but that doesn't make frequency domain a bad term. It's just a name meant to carry some intuition; that's all. It's not meant to serve as the formal definition.