Meaning of PRIORITY in English
Used for listed equity securities. System used in an auction market , in which the first bid or offer price is executed before other bid and offer prices, even if subsequent orders are larger. N.Y.S.E. rules stipulate that the bid made first should be executed first, or if two bids came in at once, the bid for the large number of shares receives "priority". The bid that was not executed is then reported back to the broker , who informs the customer that the trade was not completed because there was stock ahead . See: standing .
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012