noun, verb ·Rare ·Advanced level

Definitions

Noun

1. 1
   A flow in the opposite direction; or the flow of two fluids in opposite directions countable, uncountable

   "We, too, used[…] a counterflow heat exchanger to warm incoming fresh air."

2. 2
   Driving in the opposite direction. Philippines, countable, uncountable

Verb

1. 1
   To flow in the opposite direction

Synonyms

All synonyms

backflowbackwashbackwatercontrafloweddygulf

Example

More examples

"We, too, used[…] a counterflow heat exchanger to warm incoming fresh air."

Etymology

From counter- + flow.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.