Strontium (noun)

1. A chemical element with the symbol Sr and atomic number 38. It is a silvery-white metal that is highly reactive chemically.
2. A radioactive isotope of strontium that is used in medicine to treat bone cancer and osteoporosis.

Origin:

Named after strontian, a village in scotland where the mineral strontianite was first discovered. the element was discovered by adair crawford and william cruickshank in 1790.

Examples:

1. Strontium is found in the minerals strontianite and celestite.
2. Strontium is used to produce fireworks, flares and flares for signaling in the night.
3. The strontium isotope is used to track the movement of ocean currents.
4. Strontium-90, a radioactive isotope of strontium, is used in medical treatments for bone cancer and osteoporosis.
5. The strontium compound is used in the production of ferrite magnets.