Urban Dictionary: Kryptonite
kryptonite. Kryptonite is a compound consisting of the element krypton, according to chemical-forming "-ite" nomenclature of chemistry. However, krypton is a planet where Superman Clark Kent comes from and the substance kryptonite from it due to the explosion is fatal to our Superman, i.e. the translucently green rocks you would see in the TV ...
DA: 72 PA: 30 MOZ Rank: 37