Titanium is a chemical element with symbol Ti and atomic number 22. It is a lustrous transition metal with a silver color, low density and high strength. It is highly resistant to corrosion in sea water, aqua regia and chlorine.
Titanium was discovered in Cornwall, Great Britain, by William Gregor in 1791 and named by Martin Heinrich Klaproth for the Titans of Greek mythology. The element occurs within a number of minearal deposits, principally rutile and ilmenite, which are widely distributed in Earth's crust and lithosphere, and it is found in almost all living things, rocks, water bodies, and soils.
