Entry from British & World English dictionary
The movement of liquid or air back in the direction it was flowing from: when filling the tank, use an anti-siphon device to prevent backflow the valves prevent backflow of blood into the veins
More example sentences
- Veins in the legs have valves which normally prevent any backflow of the blood on its way towards the heart.
- The reverse flow of electricity or "backflow" can injure an unsuspecting utility worker.
- Install a backflow valve to prevent sewer backup from coming into your home.
For editors and proofreaders
Line breaks: back|flow
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.