aerator
/eɪˈɛrɪˌeɪtər/Definitions
1. noun
A device that introduces air into a liquid, especially water, to increase oxygenation and prevent stagnation.
“The gardener used an aerator to improve the circulation of water in the pond.”
2. verb
To introduce air into a liquid, especially water, to increase oxygenation and prevent stagnation.
“The farmer aerated the water in the irrigation system to promote healthy plant growth.”