Spread
Definition 1 The difference between the current Bid and the current Ask (in Over-the-Counter trading) or offered (in Exchange trading) of a given security; also called Bid/ask spread. Definition 2 The Purchase of one Option and the simultaneous sale of a related option, such as two options of the same Class but different strike prices and/or Expiration date. also called Spread option. Definition 3 More generally, the difference between any two prices.