h

noun

1. 1

   the 8th letter of the Roman alphabet

   enthalpy is the amount of energy in a system capable of doing mechanical work

2. 2

   (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure

   enthalpy is the amount of energy in a system capable of doing mechanical work

3. 3

   the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second

4. 4

   a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second

5. 5

   a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe