👉 Underoxidised is a chemical term that refers to a state of deficiency or lack in an element. In the context of chemistry, it means that a substance has not been oxidized to its full potential or has lost some or all of its oxidation states. This can happen due to various factors such as temperature, pressure, or other environmental conditions. Underoxidised substances are often used in industrial processes where they may not be fully oxidized and need to be treated before being used for further processing.