Titanium is a chemical element that was discovered by a British amateur geologist in Cornwall in 1791. It was named after the Titans from Greek mythology because of its natural strength. It has a low density and is a strong, lustrous, corrosion resistant metal that's found in almost all living things, in natural bodies of water, in most igneous rocks and in some soils. The minerals ilmenite and rutile are ores of titanium but it can also be found in meteorites and the sun. The ninth most abundant element in Earth's crust, it's used as an alloy with aluminum, iron and many other metals.
Titanium is used in applications where where strength, low weight and resistance to heat are important. It's widely used in aviation, aerospace and in association with a wide range of medical and dental implants because it does not react within the human body. The only drawback is that it's expensive becuase it's difficult and time consuming to extract from its respective ore.