# Definition of Constant. Meaning of Constant. Synonyms of Constant

Here you will find one or more explanations in English for the word Constant. Also in the bottom left of the page several parts of wikipedia pages related to the word Constant and, of course, Constant synonyms and on the right images related to the word Constant.

## Definition of Constant

Constant
Constant Con"stant, n. 1. (Astron.) A number whose value, when ascertained (as by observation) and substituted in a general mathematical formula expressing an astronomical law, completely determines that law and enables predictions to be made of its effect in particular cases. 2. (Physics) A number expressing some property or condition of a substance or of an instrument of precision; as, the dielectric constant of quartz; the collimation constant of a transit instrument. Aberration constant, or Constant of aberration (Astron.), a number which by substitution in the general formula for aberration enables a prediction to be made of the effect of aberration on a star anywhere situated. Its value is 20[sec].47. Constant of integration (Math.), an undetermined constant added to every result of integration. Gravitation constant (Physics), the acceleration per unit of time produced by the attraction of a unit of mass at unit distance. When this is known the acceleration produced at any distance can be calculated. Solar constant (Astron.), the quantity of heat received by the earth from the sun in a unit of time. It is, on the C. G. S. system, 0.0417 small calories per square centimeter per second. --Young.
Constant
Constant Con"stant, a. [L. onstans, -antis, p. pr. of constare to stand firm, to be consistent; con- + stare to stand: cf. F. constant. See Stand and cf. Cost, v. t.] 1. Firm; solid; fixed; immovable; -- opposed to fluid. [Obs.] If . . . you mix them, you may turn these two fluid liquors into a constant body. --Boyle. 2. Not liable, or given, to change; permanent; regular; continuous; continually recurring; steadfast; faithful; not fickle. Both loving one fair maid, they yet remained constant friends. --Sir P. Sidney. I am constant to my purposes. --Shak. His gifts, his constant ourtship, nothing gained. --Dryden. Onward the constant current sweeps. --Longfellow. 3. (Math. & Physics) Remaining unchanged or invariable, as a quantity, force, law, etc. 4. Consistent; logical. [Obs.] --Shak. Syn: Fixed; steadfast; unchanging; permanent; unalterable; immutable; invariable; perpetual; continual; resolute; firm; unshaken; determined. Usage: Constant, Continual, Perpetual. These words are sometimes used in an absolute and sometimes in a qualified sense. Constant denotes, in its absolute sense, unchangeably fixed; as, a constant mind or purpose. In its qualified sense, it marks something as a ``standing' fact or occurence; as, liable to constant interruptions; constantly called for. Continual, in its absolute sense, coincides with continuous. See Continuous. In its qualified sense, it describes a thing as occuring in steady and rapid succession; as, a round of continual calls; continually changing. Perpetual denotes, in its absolute sense, what literally never ceases or comes to an end; as, perpetual motion. In its qualified sense, it is used hyperbolically, and denotes that which rarely ceases; as, perpetual disturbance; perpetual noise; perpetual intermeddling.
Constant
Constant Con"stant, n. 1. That which is not subject to change; that which is invariable. 2. (Math.) A quantity that does not change its value; -- used in countradistinction to variable. Absolute constant (Math.), one whose value is absolutely the same under all circumstances, as the number 10, or any numeral. Arbitrary constant, an undetermined constant in a differential equation having the same value during all changes in the values of the variables.

## Meaning of Constant from wikipedia

- constant in Wiktionary, the free dictionary. Constant or The Constant may refer to: Constant (mathematics), a non-varying value Mathematical constant...
- The Planck constant, or Planck's constant, denoted by h {\textstyle h} , is a fundamental physical constant of foundational importance in quantum mechanics:...
- written as ln(x) or loge(x). Euler's constant (sometimes called the Euler–Mascheroni constant) is a mathematical constant, usually denoted by the lowercase...
- The Boltzmann constant (kB or k) is the proportionality factor that relates the average relative thermal energy of particles in a gas with the thermodynamic...
- The molar gas constant (also known as the gas constant, universal gas constant, or ideal gas constant) is denoted by the symbol R or R. It is the molar...
- "The Constant" is the fifth episode of the fourth season of the American Broadcasting Company's (ABC) serial drama television series Lost, and the 77th...
- A physical constant, sometimes fundamental physical constant or universal constant, is a physical quantity that cannot be explained by a theory and therefore...
- A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a special symbol (e.g., an alphabet letter)...
- Radiation constant may refer to: The first and second radiation constants c1 and c2 – see Planck's Law The radiation density constant a – see Stefan–Boltzmann...
- The Avogadro constant, commonly denoted NA or L, is an SI defining constant with an exact value of 6.02214076×1023 mol−1 (reciprocal moles). It is defined...