An order (often erroneously known as a 'stop-loss' order), placed away from the current market, that becomes a market order if the security trades at the price specified on the stop order. Buy stop orders are placed above the market while sell stop orders are placed below.
See Also:
Order: A ticket or voucher representing long or short securities and options.
Buy Stop Order: An order to purchase a security entered at a price above the current offering price triggered when the market hits a specified price.