Historicity (n.) is the way in which "Dasein stretches along between birth and death.
Historicity (n.) of Dasein refuses the isolation of any single concept even more fiercely than any system does.
Historicity (n.) means rising out of the sway of be-ing and so continuing to belong to it, not being referred back to the past.
Historicity (n.) is that thanks to which past events and things can be meaningful to us in such a way that we can study them scientifically.
Historicity (n.) is the idea that being and truth do not have a fixed nature readily accessible to us. We give different accounts of them at different times, and what they are at any given time depends in part on our questions and answers about them.