This is a word of comparison and relation In tenure, the cor-relative of which is the word “priority.” Thus, a man who held lands or tenements of two lords was said to hold of his more an-cient lord by priority, and of hls less ancient lord by posteriority, old Nat. Brev. 94. It has also a general application in law consistent with its etymological meaning, nnd, as so used, it is likewise opposed to priority. Brown
Source: Black's Law Dictionary 2nd Ed (1910)
