constant

[kon-stuhnt]
adjective
1.
not changing or varying; uniform; regular; invariable: All conditions during the three experiments were constant.
2.
continuing without pause or letup; unceasing: constant noise.
3.
regularly recurrent; continual; persistent: He found it impossible to work with constant interruption.
4.
faithful; unswerving in love, devotion, etc.: a constant lover.
5.
steadfast; firm in mind or purpose; resolute.
6.
Obsolete. certain; confident.
noun
7.
something that does not or cannot change or vary.
8.
Physics. a number expressing a property, quantity, or relation that remains unchanged under specified conditions.
9.
Mathematics. a quantity assumed to be unchanged throughout a given discussion.

Origin:
1350–1400; Middle English < Latin constant- (stem of constāns, present participle of constāre to stand firm), equivalent to con- con- + stā- stand + -nt- present participle suffix

constantly, adverb
nonconstant, noun, adjective
overconstant, adjective
overconstantly, adverb
overconstantness, noun
quasi-constant, adjective
quasi-constantly, adverb
unconstant, adjective
unconstantly, adverb


1. unchanging, immutable, permanent. 2. perpetual, unremitting, uninterrupted. 3. incessant, ceaseless. 4. loyal, staunch, true. See faithful. 5. steady, unwavering, unswerving.


1. changeable. 2. fitful. 3. sporadic. 4. unreliable. 5. wavering.
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World English Dictionary
constant (ˈkɒnstənt)
 
adj
1.  fixed and invariable; unchanging
2.  continual or continuous; incessant: constant interruptions
3.  resolute in mind, purpose, or affection; loyal
 
n
4.  something that is permanent or unchanging
5.  a specific quantity that is always invariable: the velocity of light is a constant
6.  a.  maths a symbol representing an unspecified number that remains invariable throughout a particular series of operations
 b.  physics a theoretical or experimental quantity or property that is considered invariable throughout a particular series of calculations or experiments
7.  See logical constant
 
[C14: from Old French, from Latin constāns standing firm, from constāre to be steadfast, from stāre to stand]
 
'constantly
 
adv

Constant (French kɔ̃stɑ̃)
 
n
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 10th Edition
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Etymonline
Word Origin & History

constant
late 14c., "steadfast, resolute," from L. constantem (nom. constans) "standing firm, stable, steadfast," prp. of constare, from com- "together" + stare "to stand," from PIE base *sta- "to stand" (see stet). Of actions and conditions from 1653.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

constant con·stant (kŏn'stənt)
adj.

  1. Continually occurring; persistent.

  2. Unchanging in nature, value, or extent; invariable.

n.
  1. A quantity assumed to have a fixed value in a specified mathematical context.

  2. An experimental or theoretical condition, factor, or quantity that does not vary or that is regarded as invariant in specified circumstances.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
constant   (kŏn'stənt)  Pronunciation Key 
  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.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

constant definition


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

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
We are constantly exploited by the tools meant to foil our exploitation.
The universe is constantly being created-and destroyed.
If this is the new twist to intelligent design, it's not much intelligent, and
  is constantly devolving to lower intelligence.
As summer rolls along, the plum scene shifts constantly.
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