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1. Oxford Dictionary

   constant

   • IPA[ˈkɒnst(ə)nt]

   英式

   • adj.
     occurring continuously over a period of time；remaining the same over a period of time
   • n.
     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: constant, plural noun: constants

2. • 釋義
   • 相關詞

   adj.

   形容詞

   • 1. occurring continuously over a period of time the constant background noise of the city 同義詞 continual, continuous, persistent, sustained, abiding, ... 更多round-the-clock, ceaseless, unceasing, perpetual, incessant, never-ending, everlasting, eternal, endless, unending, unabating, non-stop, perennial, unbroken, uninterrupted, unrelieved, interminable, unremitting, relentless, unrelenting, without respite, literarysempiternal, steadfast, steady, resolute, determined, persevering, tenacious, dogged, unwavering, unflagging, unshaken反義詞 inconstant, fitful
   • ▪ remaining the same over a period of time these discs rotate at a constant speed 同義詞 consistent, regular, stable, steady, fixed, ... 更多uniform, even, level, invariable, unvarying, unchanging, changeless, undeviating, unfluctuating, immutable反義詞 inconstant, variable
   • ▪ (of a person) unchangingly faithful and dependable a constant friend 同義詞 faithful, loyal, devoted, true, fast, ... 更多firm, unswerving, unwavering, steadfast, staunch, stalwart, dependable, trustworthy, trusty, reliable, dedicated, committed, bosom, boon反義詞 inconstant, fickle

   n.

   名詞

   • 1. a situation that does not change the condition of struggle remained a constant
   • ▪ a quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions.
   • ▪ a number expressing a relation or property which remains the same in all circumstances, or for the same substance under the same conditions.

   dissociation constant

   • n.
     a quantity expressing the extent to which a particular substance in solution is dissociated ...

   Oxford American Dictionary

   dielectric constant

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

   Oxford Dictionary

   Rydberg constant

   • n.
     a constant, 1.097 x 107 m−1, which appears in the formulae for the wave numbers of lines in ...

   Oxford American Dictionary

   Rydberg constant

   • n.
     a constant, 1.097 x 107 m−1, which appears in the formulae for the wave numbers of lines in ...

   Oxford Dictionary

   dissociation constant

   • n.
     a quantity expressing the extent to which a particular substance in solution is dissociated ...

   Oxford Dictionary

   time constant

   • n.
     a time which represents the speed with which a particular system can respond to change, ...

   Oxford Dictionary

   cosmological constant

   • n.
     an arbitrary constant in the field equations of general relativity.

   Oxford Dictionary

   solar constant

   • n.
     the rate at which energy reaches the earth's surface from the sun, usually taken to be ...

   Oxford Dictionary

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3. • 更多解釋

   constant

   • IPA[ˈkänst(ə)nt]

   美式

   • adj.
     occurring continuously over a period of time: the pain is constant
   • n.
     a situation or state of affairs that does not change: the condition of struggle remained a constant

   Oxford American Dictionary