e/Crack spread

Information
has gloss	eng: Crack spread is a term used in the oil industry and futures trading for the differential between the price of crude oil and petroleum products extracted from it - that is, the profit margin that an oil refinery can expect to make by "cracking" crude oil (breaking its long-chain hydrocarbons into useful shorter-chain petroleum products).
lexicalization	eng: crack spread
instance of	e/Commodity market