Ferrum is the Latin word for iron, a chemical element with the symbol Fe and atomic number 26. It is a metal known for its strength and durability, making it essential in construction and manufacturing. Iron is the most widely used metal in the world, primarily found in ores like hematite and magnetite. In addition to its industrial uses, iron plays a crucial role in biology. It is a vital component of hemoglobin, the protein in red blood cells that carries oxygen throughout the body. A deficiency in iron can lead to anemia, a condition characterized by fatigue and weakness.