A distinguishing feature of a person or thing.
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 integer part of a logarithm.
The distinguishing features of a navigational light on a lighthouse etc by which it can be identified (colour, pattern of flashes etc.).
Being a distinguishing feature of a person or thing.
That which is peculiar; a sole or exclusive property; a prerogative; a characteristic.
an ecclesiastical district, parish, chapel or church outside the jurisdiction of the bishop of the diocese in which it is situated.
Common or usual for a certain place or circumstance; specific or particular.
Out of the ordinary; odd; strange; unusual.