Yahoo Dictionary Web Search

  1. con·stant
    IPA[ˈkänstənt]
  2. adjective

    noun

    • 1. a situation or state of affairs that does not change:

      the condition of struggle remained a constant
    • 2. a quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions.

    • 3. a number expressing a relation or property which remains the same in all circumstances, or for the same substance under the same conditions.

  3. Variation

    • n.: noun: constant, plural noun: constants

    • adjective

      occurring continuously over a period of time:

      remaining the same over a period of time:

    • noun

      a situation that does not change:

      a quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions.

    • noun

      a quantity measuring the ability of a substance to store electrical energy in an electric field.
    • noun

      a quantity expressing the extent to which a particular substance in solution is dissociated into ions, equal to the product of the concentrations of the respective ions divided by the concentration of the undissociated molecule.
    • noun

      a coefficient of proportionality relating the rate of a chemical reaction at a given temperature to the concentration of reactant (in a unimolecular reaction) or to the product of the concentrations of reactants.
    • noun

      the rate at which energy reaches the earth's surface from the sun, usually taken to be 1,388 watts per square meter.
    • noun

      the constant of proportionality in the gas equation. It is equal to 8.314 joule kelvin−1 mole−1.
    • noun

      the constant in Newton's law of gravitation relating gravity to the masses and separation of particles, equal to 6.67 × 1011N m2 kg2.
    • noun

      a time that represents the speed with which a particular system can respond to change, typically equal to the time taken for a specified parameter to vary by a factor of 11/e (approximately 0.6321).
    • noun

      a constant, 1.097 x 107 m−1, which appears in the formulae for the wave numbers of lines in atomic spectra and is a function of the rest mass and charge of the electron, the speed of light, and Planck's constant.
  1. 123438 results