amerikai:
brit:
1. A distinguishing feature of a person or thing.
2. The integer part of a logarithm.
3. The distinguishing features of a navigational light on a lighthouse etc by which it can be identified (colour, pattern of flashes etc.).
4. For a given field or ring, a natural number that is either the smallest positive number n such that n instances of the multiplicative identity (1) summed together yield the additive identity (0) or, if no such number exists, the number 0.
The characteristic of a field, if non-zero, must be a prime number.
1. Being a distinguishing feature of a person or thing.