Hypertext Webster Gateway: "upstream"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Upstream \Up*stream"\, adv.
Toward the higher part of a stream; against the current.
From WordNet (r) 1.7 (wn)
upstream
adj : in the direction against a stream's current [ant: {downstream}]
adv 1: toward the source or against the current [syn: {upriver}]
[ant: {downriver}, {downriver}]
2: against the current; "he swam upstream"
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