- an apparatus for aerating water or other fluids.
- a device for introducing air into a bin of wheat or other grain in order to prevent the accumulation of moisture, keeping it free of fungi and insects.
Origin of aerator
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for aerator
An aerator is used before filtration during the summer, when algae are likely to develop in the reservoir.