Medical Definition of HYDANTOIN. 1. : a crystalline weakly acidic imidazole derivative C3H4N2O2 with a sweetish taste that is found in beet juice and used in organic synthesis.2. : a derivative of hydantoin (as phenytoin).What made you want to look up hydantoin?. : a crystalline weakly acidic imidazole derivative C3H4N2O2 with a sweetish taste that is found in beet juice and used in organic synthesis. 2. : a derivative of hydantoin (as phenytoin).
Fun Facts About Argon. Argon is one of the many elements in the Periodic Table. Its normal phase is gas, and it is in the family of Noble Gases. Its symbol is Ar., and its atomic number is eighteen. There are also eighteen protons, twenty-two neutrons, and eighteen electrons in argon. This element boils at -186.0 degrees Celsius and melts at -189.3 degrees Celsius.
Argon is element number 18 and has the atomic symbol Ar -- renamed in 1959 from its original atomic symbol, which was simply A. As you can see in the image above, argon gas produces a lovely bluish-purple colour when excited with electricity.