Priority  n. (pl. -ies) 1 thing that is regarded as more important than others. 2 high(est) place among various things to be done (gave priority to). 3 right to do something before other people. 4 right to proceed ahead of other traffic. 5 (state of) being more important.  prioritize v. (also -ise) (-zing or -sing). [medieval latin: related to *prior]