constant
1 Americanadjective
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not changing or varying; uniform; regular; invariable.
All conditions during the three experiments were constant.
- Antonyms:
- changeable
-
continuing without pause or letup; unceasing.
constant noise.
- Synonyms:
- unremitting, perpetual
- Antonyms:
- fitful
-
regularly recurrent; continual; persistent.
He found it impossible to work with constant interruption.
- Antonyms:
- sporadic
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faithful; unswerving in love, devotion, etc..
a constant lover.
- Antonyms:
- unreliable
-
steadfast; firm in mind or purpose; resolute.
- Synonyms:
- steady
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Obsolete. certain; confident.
noun
-
something that does not or cannot change or vary.
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Physics. a number expressing a property, quantity, or relation that remains unchanged under specified conditions.
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Mathematics. a quantity assumed to be unchanged throughout a given discussion.
noun
-
Paul Henri Benjamin Balluat Paul d'Estournelles de Constant.
-
Jean Joseph Benjamin 1845–1902, French painter.
noun
adjective
-
fixed and invariable; unchanging
-
continual or continuous; incessant
constant interruptions
-
resolute in mind, purpose, or affection; loyal
noun
-
something that is permanent or unchanging
-
a specific quantity that is always invariable
the velocity of light is a constant
-
-
maths a symbol representing an unspecified number that remains invariable throughout a particular series of operations
-
physics a theoretical or experimental quantity or property that is considered invariable throughout a particular series of calculations or experiments
-
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See logical constant
-
A quantity that is unknown but assumed to have a fixed value in a specified mathematical context.
-
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.
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.
After a series of experiments in mice, the team found that diet induced thermogenesis produced almost the same weight loss as constant exposure to five degrees Celsius around the clock.
From Science Daily
"We will continue to seek constant productivity improvements and cost reductions in the coming years, especially in Europe, but also worldwide."
From Barron's
One constant question since Maduro's arrest is: how long can Cuba hold on without new fuel supplies reaching the island?
From BBC
After a few warmer days, on March 29 it turned so cold that around midnight an ice wedge stopped the constant crash of New York’s Niagara Falls.
From Literature
“It’s a constant dance with regulators who, with so many innovations, you know, have to work really hard to stay current on new technologies, and I think it’ll always be that way,” he said.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
