upstream - meaning and definition. What is upstream
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What (who) is upstream - definition

AUTHORIZED TELECOMMUNICATIONS INTERCEPT POINT
SG3 Secure Room; NSA fiber-optic tapping; UPSTREAM
  • Photograph of Room 641's exterior

Upstream         
·adv Toward the higher part of a stream; against the current.
upstream         
Something that is moving upstream is moving towards the source of a river, from a point further down the river. Something that is upstream is towards the source of a river.
The water rose high enough for them to continue upstream.
...the river police, whose headquarters are just upstream of the Isle St Louis...
? downstream
ADV: ADV after v, be ADV, n ADV, oft ADV of/from n
Upstream is also an adjective.
Steps lead down to the subway from the upstream side.
? downstream
ADJ: ADJ n
upstream         
<networking> Fewer network hops away from a backbone or hub. For example, a small ISP that connects to the Internet through a larger ISP that has their own connection to the backbone is downstream from the larger ISP, and the larger ISP is upstream from the smaller ISP. (1999-08-05)

Wikipedia

Room 641A

Room 641A is a telecommunication interception facility operated by AT&T for the U.S. National Security Agency, as part of its warrantless surveillance program as authorized by the Patriot Act. The facility commenced operations in 2003 and its purpose was publicly revealed in 2006.

Examples of use of upstream
1. It moves upstream by handling more consulting work, analysts said.
2. A further rise in oil prices boosted upstream oil companies.
3. Upstream oil companies gained from another increase in crude prices.
4. By Saturday, it had moved upstream toward the Chelsea Bridge.
5. Firtash also said his companies wanted to buy upstream assets.