Ammonium cation: The cation of molecular formula NH 4 + (i.e., the conjugate acid of ammonia). Can also refer to any cation in which nitrogen has four single bonds and a positive formal charge, such as the tetra methyl ammonium cation.
Arden /ar-den/ [2 sylls.] as a girls' name (also used as boys' name Arden) is pronounced AR-den. It is of Latin origin, and the meaning of Arden is great forest. Literary: the Forest of Arden in Shakespeare's As You Like It was a magically beautiful place.
Arden, Nevada. Arden, Nevada is an unincorporated community in Clark County, Nevada. Its ZIP code is 89118. Located about 7 miles (11 km) southwest of Las Vegas, the area is experiencing rapid growth in housing development on land formerly owned by the Bureau of Land Management. Enterprise is another unincorporated community nearby; it includes the master-planned community of Mountain's Edge.