The term 'Oxygenating Tool' can be summarized as an Aerator, which is a seven-letter word. An aerator is a device used to introduce oxygen into a liquid or gas, such as water or air. It is commonly used in aquariums, ponds, and other water systems to increase the oxygen content of the water, making it more suitable for aquatic life. Aerators are also used in wastewater treatment plants to help break down organic matter and reduce odors.