OPM Medical Retirement under FERS & CSRS: Admission
It is a noun of peculiar variability, perhaps all interconnected upon reflection. It can refer to the permission to enter, whether by right, payment or removal of obstacles; or, denoting the price of such entrance; or even yet, a confession or acknowledgment of a point taken; and in other contexts, of being accepted into a fraternity of sorts, as in “admission to a university” or “to the legal bar” – meaning, not an actual, physical movement through gates now open, but a conceptual membership into a community of selective individuals. […]