Description: The term ‘aqueous’ refers to anything that is related to, similar to, or dissolved in water. This adjective is used in various disciplines, including chemistry, biology, and medicine, to describe solutions, media, or environments that contain water as a primary component. The aqueous nature of a substance implies that water acts as a solvent, facilitating chemical reactions and biological processes. In the context of chemistry, aqueous solutions are fundamental, as many chemical reactions occur in the presence of water. Additionally, the term can also refer to physical characteristics, such as the texture or state of a material that has a liquid or moist consistency. The importance of water in life and industrial processes makes the term ‘aqueous’ relevant in multiple fields, from ecology to pharmacology, where the interactions of substances in aqueous solutions are studied. In summary, ‘aqueous’ is a term that encapsulates the essence of water as a vital element in chemistry and biology, highlighting its role as a dissolution medium and its influence on various reactions and processes.