Intermarket Spread

What Does Intermarket Spread Mean?
The simultaneous purchase of a given delivery month of a futures contract on one exchange, and the simultaneous sale of the same delivery month of the same futures contract on another exchange in the hope the sale price is greater than the purchase price.

Investopedia explains Intermarket Spread
Spread traders are only concerned that their long positions rise in value relative to their short positions. For example, a trader may purchase May Chicago Board of Trade Corn and simultaneously sell May Kansas City Board of Trade Corn (in the same year) in the hope the long position will increase in price and the short position will fall in price.