In a direction against the flow of a current or stream of fluid (typically water); upriver. / (oil industry) Involving exploration and pre-production rather than refining and selling.

Against the current.

(intransitive) To stream upward.

Part of the river towards the upstream direction. / (open-source software) The original developers or maintainers of software.

(business) A partnership between an independent record label and a major record label, by which successful acts signed to the independent label are transferred to the major label.

present participle of upstream

simple past tense and past participle of upstream

Third-person singular simple present indicative form of upstream

plural of upstream

plural of upstreamer