upstream

Pronunciation

• IPA ^(key): /ʌpˈstriːm/

• Audio (UK)

  (file)

Preposition

Preposition upstream

1. If ${\displaystyle x}$ is upstream from ${\displaystyle y}$, ${\displaystyle x}$ and ${\displaystyle y}$ are on or beside a river and the water moves from ${\displaystyle x}$ to ${\displaystyle y}$.

   Oxford is upstream from London on the River Thames.

   He found it very difficult to move the boat upstream against the river.

Antonyms

• downstream

Related words

• up
• stream