means A unit of magnetic flux density in physics, the name of the inventor Nikola Tesla, and the brand of electric vehicles named in his honor.

from From the surname of Nikola Tesla (1856–1943), the Serbian-American electrical engineer whose work on alternating current shaped modern power systems. The Serbian surname itself is thought to derive from a word for an adze or a carpenter's tool. In 1960 the international scientific community honored him by attaching his name to the SI unit of magnetic flux density. Decades later, an American car company borrowed the name again — so a man who died nearly penniless now lends his name to both the physics of magnets and a fortune of automobiles.