What does constant mean?

Definitions for constant
ˈkɒn stəntcon·stant

This dictionary definitions page includes all the possible meanings, example usage and translations of the word constant.

Princeton's WordNet

  1. constant, constant quantity, invariablenoun

    a quantity that does not vary

  2. constantadjective

    a number representing a quantity assumed to have a fixed value in a specified mathematical context

    "the velocity of light is a constant"

  3. changeless, constant, invariant, unvaryingadjective

    unvarying in nature

    "maintained a constant temperature"; "principles of unvarying validity"

  4. constantadjective

    steadfast in purpose or devotion or affection

    "a man constant in adherence to his ideals"; "a constant lover"; "constant as the northern star"

  5. ceaseless, constant, incessant, never-ending, perpetual, unceasing, unremittingadjective

    uninterrupted in time and indefinitely long continuing

    "the ceaseless thunder of surf"; "in constant pain"; "night and day we live with the incessant noise of the city"; "the never-ending search for happiness"; "the perpetual struggle to maintain standards in a democracy"; "man's unceasing warfare with drought and isolation"; "unremitting demands of hunger"


  1. Constantnoun

    (Computers) a data structure that does not change during the course of execution of a program. It may be a number, a string, or a more complex data structure; -- contrasted with variable.


  1. constantnoun

    That which is permanent or invariable.

  2. constantnoun

    A quantity that remains at a fixed value throughout a given discussion.

  3. constantnoun

    Any property of an experiment, determined numerically, that does not change under given circumstances.

  4. constantnoun

    An identifier that is bound to an invariant value.

  5. constantadjective

    Unchanged through time or space; permanent.

  6. constantadjective

    Consistently recurring over time; persistent

  7. constantadjective

    Steady in purpose, action, feeling, etc.

  8. Etymology: From constantem, constare.

Samuel Johnson's Dictionary

  1. CONSTANTadjective

    Etymology: constans, Latin.

    If you take highly rectified spirit of wine, and dephlegmed spirit of urine, and mix them, you may turn these two fluid liquors into a constant body. Robert Boyle, History of Firmness.

    Some shrewd contents,
    Now steal the colour from Bassanio’s cheek:
    Some dear friend dead; else nothing in the world
    Could turn so much the constitution
    Of any constant man. William Shakespeare, Merchant of Venice.

    Both loving one fair maid, they yet remained constant friends. Philip Sidney, b. ii.

    Now, through the land, his care of souls he stretch’d;
    And like a primitive apostle preach’d;
    Still chearful, ever constant to his call;
    By many follow’d, lov’d by most, admir’d by all. Dryden.

    He shewed his firm adherence to religion as modelled by our national constitution, and was constant to its offices in devotion, both in publick and in his family. Joseph Addison, Freeholder.


  1. constant

    A constant is a fixed value or property that remains unchanged and constant throughout a particular context, situation, or equation. It does not vary or fluctuate over time or within a specific set of conditions. Constants are used in various fields, such as mathematics, physics, and computer programming, to represent specific known values or parameters that are necessary for calculations or to define relationships between variables.

Webster Dictionary

  1. Constantverb

    firm; solid; fixed; immovable; -- opposed to fluid

  2. Constantverb

    not liable, or given, to change; permanent; regular; continuous; continually recurring; steadfast; faithful; not fickle

  3. Constantverb

    remaining unchanged or invariable, as a quantity, force, law, etc

  4. Constantverb

    consistent; logical

  5. Constantnoun

    that which is not subject to change; that which is invariable

  6. Constantnoun

    a quantity that does not change its value; -- used in countradistinction to variable

Chambers 20th Century Dictionary

  1. Constant

    kon′stant, adj. fixed: unchangeable: firm: continual: faithful.—n. (math.) a term or quantity which does not vary throughout a given investigation: that which remains unchanged.—n. Con′stancy, fixedness: unchangeableness: faithfulness: (Shak.) perseverance: (Shak.) certainty.—adv. Con′stantly. [L. constans, -antis, from constāre, to stand firm—con, inten., stāre, to stand.]

Surnames Frequency by Census Records


    According to the U.S. Census Bureau, Constant is ranked #7929 in terms of the most common surnames in America.

    The Constant surname appeared 4,173 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 1 would have the surname Constant.

    63.3% or 2,642 total occurrences were White.
    30.1% or 1,260 total occurrences were Black.
    2.9% or 124 total occurrences were of Hispanic origin.
    2.4% or 103 total occurrences were of two or more races.
    0.5% or 24 total occurrences were American Indian or Alaskan Native.
    0.4% or 20 total occurrences were Asian.

Matched Categories

British National Corpus

  1. Spoken Corpus Frequency

    Rank popularity for the word 'constant' in Spoken Corpus Frequency: #2175

  2. Written Corpus Frequency

    Rank popularity for the word 'constant' in Written Corpus Frequency: #2770

  3. Adjectives Frequency

    Rank popularity for the word 'constant' in Adjectives Frequency: #283

How to pronounce constant?

How to say constant in sign language?


  1. Chaldean Numerology

    The numerical value of constant in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of constant in Pythagorean Numerology is: 7

Examples of constant in a Sentence

  1. Booker T. Washington:

    I believe that any man's life will be filled with constant and unexpected encouragement, if he makes up his mind to do his level best each day, and as nearly as possible reaching the high water mark of pure and useful living.

  2. Claudia Villarroel:

    These rains serve to accumulate water, but the superficial run-off is very high. What is best is a little, constant rain.

  3. Robert J. Sawyer:

    Not wanting to die was another universal constant, it seemed.

  4. President Trump:

    As President Trump honor President Trump shared victory and heritage, President Trump affirm the common values that will unite President Trump long into future : freedom, sovereignty, self-determination, the rule of law and reverence for the rights given to President Trump by almighty God, from the Second World War to today, her majesty has stood as a constant symbol of these priceless traditions.

  5. Stavros Theodorakis:

    Greek society is suffering from the constant postponement of a deal.

Popularity rank by frequency of use


Translations for constant

From our Multilingual Translation Dictionary

Get even more translations for constant »


Find a translation for the constant definition in other languages:

Select another language:

  • - Select -
  • 简体中文 (Chinese - Simplified)
  • 繁體中文 (Chinese - Traditional)
  • Español (Spanish)
  • Esperanto (Esperanto)
  • 日本語 (Japanese)
  • Português (Portuguese)
  • Deutsch (German)
  • العربية (Arabic)
  • Français (French)
  • Русский (Russian)
  • ಕನ್ನಡ (Kannada)
  • 한국어 (Korean)
  • עברית (Hebrew)
  • Gaeilge (Irish)
  • Українська (Ukrainian)
  • اردو (Urdu)
  • Magyar (Hungarian)
  • मानक हिन्दी (Hindi)
  • Indonesia (Indonesian)
  • Italiano (Italian)
  • தமிழ் (Tamil)
  • Türkçe (Turkish)
  • తెలుగు (Telugu)
  • ภาษาไทย (Thai)
  • Tiếng Việt (Vietnamese)
  • Čeština (Czech)
  • Polski (Polish)
  • Bahasa Indonesia (Indonesian)
  • Românește (Romanian)
  • Nederlands (Dutch)
  • Ελληνικά (Greek)
  • Latinum (Latin)
  • Svenska (Swedish)
  • Dansk (Danish)
  • Suomi (Finnish)
  • فارسی (Persian)
  • ייִדיש (Yiddish)
  • հայերեն (Armenian)
  • Norsk (Norwegian)
  • English (English)

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:


Use the citation below to add this definition to your bibliography:


"constant." Definitions.net. STANDS4 LLC, 2024. Web. 5 Mar. 2024. <https://www.definitions.net/definition/constant>.

Discuss these constant definitions with the community:


    Are we missing a good definition for constant? Don't keep it to yourself...

    Free, no signup required:

    Add to Chrome

    Get instant definitions for any word that hits you anywhere on the web!

    Free, no signup required:

    Add to Firefox

    Get instant definitions for any word that hits you anywhere on the web!

    Browse Definitions.net


    Are you a words master?

    assist or encourage, usually in some wrongdoing
    • A. lucubrate
    • B. huff
    • C. suffuse
    • D. abet

    Nearby & related entries:

    Alternative searches for constant: