N

"N" is a letter in the English alphabet. It can also be used as a symbol in different contexts such as: 1. In mathematics, "N" often represents natural numbers. 2. In physics, "N" could represent Newton, the unit of force in the International System of Units. 3. In chemistry, "N" is the symbol for Nitrogen. 4. In genetics, "N" can refer to the number of chromosomes in a haploid set. Without more specific context, it's hard to provide an exact definition.