h   (TTS Sound)

The noun h has 5 senses

• hydrogen, H, atomic number 1 -- (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)


• henry, H -- (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)


• Planck's constant, h -- (the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second)


• H, h -- (the 8th letter of the Roman alphabet)


• heat content, total heat, enthalpy, H -- ((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")