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Constant

1 American  
[kawn-stahn] / kɔ̃ˈstɑ̃ /

noun

  1. Paul Henri Benjamin Balluat Paul d'Estournelles de Constant.

  2. Jean Joseph Benjamin 1845–1902, French painter.


constant 2 American  
[kon-stuhnt] / ˈkɒn stənt /

adjective

  1. not changing or varying; uniform; regular; invariable.

    All conditions during the three experiments were constant.

    Synonyms:
    permanent, immutable
    Antonyms:
    changeable
  2. continuing without pause or letup; unceasing.

    constant noise.

    Synonyms:
    unremitting, perpetual
    Antonyms:
    fitful
  3. regularly recurrent; continual; persistent.

    He found it impossible to work with constant interruption.

    Synonyms:
    ceaseless, incessant
    Antonyms:
    sporadic
  4. faithful; unswerving in love, devotion, etc..

    a constant lover.

    Synonyms:
    true, staunch, loyal
    Antonyms:
    unreliable
  5. steadfast; firm in mind or purpose; resolute.

    Synonyms:
    steady
  6. Obsolete. certain; confident.


noun

  1. something that does not or cannot change or vary.

  2. Physics. a number expressing a property, quantity, or relation that remains unchanged under specified conditions.

  3. Mathematics. a quantity assumed to be unchanged throughout a given discussion.

Constant 1 British  
/ kɔ̃stɑ̃ /

noun

  1. Benjamin (bɛ̃ʒamɛ̃). real name Henri Benjamin Constant de Rebecque. 1767–1830, French writer and politician: author of the psychological novel Adolphe (1816)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

constant 2 British  
/ ˈkɒnstənt /

adjective

  1. fixed and invariable; unchanging

  2. continual or continuous; incessant

    constant interruptions

  3. resolute in mind, purpose, or affection; loyal

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. something that is permanent or unchanging

  2. a specific quantity that is always invariable

    the velocity of light is a constant

    1. maths a symbol representing an unspecified number that remains invariable throughout a particular series of operations

    2. physics a theoretical or experimental quantity or property that is considered invariable throughout a particular series of calculations or experiments

  3. See logical constant

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
constant Scientific  
/ kŏnstənt /
  1. A quantity that is unknown but assumed to have a fixed value in a specified mathematical context.

  2. A theoretical or experimental quantity, condition, or factor that does not vary in specified circumstances. Avogadro's number and Planck's constant are examples of constants.


constant Cultural  
  1. A number that appears in equations and formulas and does not vary or change. Examples are Planck's constant and the speed of light.


Related Words

See faithful.

Other Word Forms

  • constantly adverb
  • nonconstant noun
  • overconstant adjective
  • overconstantness noun
  • quasi-constant adjective
  • unconstant adjective

Etymology

Origin of constant

First recorded in 1350–1400; Middle English, from Latin constant- (stem of constāns, present participle of constāre “to stand firm”), equivalent to con- con- + stā- stand + -nt- present participle suffix

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But it appears the case would not have been opened without constant community pressure.

From Los Angeles Times

“For our servicemen this is a life buoy, because it ensures constant and fast communication.”

From The Wall Street Journal

As the relatively sensible one, Gill, a constant companion to Jodie Whittaker’s Thirteenth Doctor, as in “Who,” is wonderful being astounded or upright.

From Los Angeles Times

The company confirmed its medium-term guidance of sales growth at constant exchange rates, but added that the economic and geopolitical environment remains uncertain.

From The Wall Street Journal

The tech is in constant communication with the racer but has final say on which pair of skis will be used for a given race.

From Los Angeles Times