1. (noun)volt, V 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 ampere of current flows through it
2. (noun)vanadium, V, atomic number 23 a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite
3. (noun)five, 5, V, cinque, quint, quintet, fivesome, quintuplet, pentad, fin, Phoebe, Little Phoebe the cardinal number that is the sum of four and one
4. (noun)V, v the 22nd letter of the Roman alphabet