The chemical symbol for iron is Fe. This symbol derives from the Latin name "ferrum," which reflects the element’s historical significance and usage. Iron is a transition metal that is essential for various biological processes, including oxygen transport in the bloodstream via hemoglobin. Due to its abundance and properties, iron is widely used in construction and manufacturing, forming a critical component of steel. The versatile nature of iron allows it to be alloyed with other elements to create various materials, making it instrumental in modern technology and infrastructure.