h meaning

Pronunciation:   "h" in a sentence
Noun: h  eych
  1. The constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
    - Planck's constant 
  2. The 8th letter of the Roman alphabet
    - H
Noun: H  eych
  1. A nonmetallic univalent element that is normally a colourless and odourless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
    - hydrogen, atomic number 1 
  2. (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 
  3. 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

Derived forms: hs, Hs

Type of: alphabetic character, chemical element, constant of proportionality, element, factor of proportionality, gas, inductance unit, letter, letter of the alphabet, physical property

Part of: H2O, Latin alphabet, Roman alphabet, water

Encyclopedia: H


Symbol for “hour.”

1. Symbol for magnetic field strength.
3. Symbol for HYDROGEN.
4. Symbol for UNIT FUNCTION.
5. Abbreviation of HORIZONTAL. (Also, hor and horiz.)
6. Symbol for HENRY.
7. Symbol for HARMONIC.

h 1. Abbreviation of prefix HECTO-.
2. Symbol for the PLANCK CONSTANT.
3. Abbreviation of HOUR.

Fifth letter of a Nasdaq stock symbol specifying that the issue is the second preferred bond of the company.

1 height
[Latin hora] hour —used in writing prescriptions; see QH
abbr heroin
symbol hydrogen
  • a.h.:    abbreviation)the y ...
  • h&s:    [Defence]headquart ...
  • :    symbol   ...


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  1. the quotient simply becomes arbitrarily large as h goes to 0.
  2. the h conversion code provides a facility for printing out characters.
  3. hs is a little detached, "both in and out the game".
  4. we will denote by h the perpendicular distance from p to the inclined face.
  5. in general the bearing will be "non-linear", the stiffness depending upon the value of h.

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