1
[ adverb ] toward the source or against the current

Synonyms

upriver

Used in print

(Raymond C. Binder et al., editors, Proceedings...)

The upstream gas temperature measured with the thermocouple shown in figure 2 was **f .

(Clayton C. Barbeau, The Ikon....)

Thus , stealthily they advanced upstream ; then they turned to the right , climbed the embankment , and walked into the valley again .

Related terms

downriver downriver

2
[ adjective ] in the direction against a stream's current

Used in print

(Raymond C. Binder et al., editors, Proceedings...)

A shielded thermocouple was used to measure the upstream temperature of the transpiring gas .

Related terms

downstream

3
[ adverb ] against the current

Examples

"he swam upstream"

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