# เอช
## Noun (N)
### Sense: (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
- heat content
- total heat
- enthalpy
- H
### Sense: the 8th letter of the Roman alphabet
- h
### Sense: the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
- Planck's constant
### Sense: 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
- henry