Upstream Definition

ŭpstrēm
adverb
In the direction against the current of a stream.
Webster's New World
At an earlier point in a production process or supply chain.
American Heritage
At or toward the beginning of some process, course of activity, etc.
Webster's New World
Synonyms:
Antonyms:
adjective
Being or moving closer to the source of a stream; in the direction opposite to that of the current.
Upstream traffic; an upstream dam.
American Heritage
Earlier in a production process or supply chain.
American Heritage
Wiktionary

(oil industry) Involving exploration and pre-production rather than refining and selling.

Wiktionary

(computing) In the direction from the client to the server.

Wiktionary
Antonyms:

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Unscrambles

upstream