V

Noun
the 22nd letter of the Roman alphabet

Noun
a unit of potential equal to the potential difference between two points on a conductor carrying a current of 1 ampere when the power dissipated between the two points is 1 watt; equivalent to the potential difference across a resistance of 1 ohm when 1 a

Noun
the cardinal number that is the sum of four and one

Noun
a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite

Adjective S.
being one more than four

As a numeral, V stands for five, in English and Latin.