I’m assuming you mean that purely on semantic grounds. Due to plasticity, regeneration or periodic cycles, in biology there is seldom irreversible change in the

I’m assuming you mean that purely on semantic grounds. Due to plasticity, regeneration or periodic cycles, in biology there is seldom irreversible change in the absolute sense; some kind of cut off point is implied. Another example is “irreversible enzyme inhibition” [0] - which is relative to the rate at which the protein is expressed and therefore could refer to a period of a couple of weeks. [0] https://en.wikipedia.org/wiki/Enzyme_inhibitor#Irreversible_inhibitors https://en.wikipedia.org/wiki/Enzyme_inhibitor#Irreversible_...