Lexic.us

Definition of H

1. Noun. 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.

2. Noun. 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.

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

4. Noun. The 8th letter of the Roman alphabet.

5. Noun. (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"

Medical Definition of H

1. Abbreviation or symbol for hyperopia or hyperopic; horizontal; Hauch; Holzknecht unit; henry, unit of electrical inductance; hydrogen; the Fraunhofer line at lambda 3968 due to calcium; histidine; magnetic field strength; heroin. Symbol for enthalpy, heat content, in the equation for free energy. Symbol for hecto-; height; hour. Symbol for Planck's constant; h = h/2π. H+ is the symbol for hydrogen ion, the proton. (05 Mar 2000)

Lexicographical Neighbors of H

Gywn G acid G actin G antigen G cell G clef G deamidase G factor G force g haemolysis

g loop G suit G suit G syndrome H H H(2)-proteinase H(2) fumarate reductase H-2 antigen H-2 complex

H-bomb H-protein lipoyltransferase h-ras H-R conduction time H-shaped H-shape vertebrae H-tetanase H-type fistula H-type tracheoesophageal fistula H-V conduction time

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