To introduce air into a material, such as soil or a liquid, to improve its quality or condition. Farmers often aerate the soil to enhance its fertility and promote healthy plant growth.
To supply or infuse with air or oxygen, often used in the context of treating water or other liquids. The aquarium pump is used to aerate the water, ensuring the fish have enough oxygen to breathe.
To expose to the circulation of air for the purpose of drying, refreshing, or purifying. After washing, she decided to aerate the clothes by hanging them outside in the fresh air.