1. in the direction opposite to the flow of a river or stream

1. located in the direction opposite to the flow of a river or stream
2. relating to earlier stages in a production or supply process
Usage: business

Examples

• The salmon swam upstream to spawn.
• We paddled upstream against the current.
• The upstream section of the river is cleaner.
• There’s an upstream dam that controls water flow.
• The company focuses on upstream oil exploration.
• Upstream suppliers provide raw materials to manufacturers.
• Problems upstream in the process caused delays downstream.