not changing or varying; uniform; regular; invariable: All conditions during the three experiments were constant.
continuing without pause or letup; unceasing:constant noise.
regularly recurrent; continual; persistent: He found it impossible to work with constant interruption.
faithful; unswerving in love, devotion, etc.: a constant lover.
steadfast; firm in mind or purpose; resolute.
Obsolete. certain; confident.
noun
something that does not or cannot change or vary.
Physics. a number expressing a property, quantity, or relation that remains unchanged under specified conditions.
Mathematics. a quantity assumed to be unchanged throughout a given discussion.
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
Wetland sediment also erodes from the constant wash of waves.
Soggy coastal soils? Here’s why ecologists love them|Alison Pearce Stevens|September 17, 2020|Science News For Students
It’s a constant competition and struggle between state and society.
Does Anyone Really Know What Socialism Is? (Ep. 408 Rebroadcast)|Stephen J. Dubner|September 17, 2020|Freakonomics
For bacteria are engaged in constant exchange with one another.
What the Meadow Teaches Us - Issue 90: Something Green|Andreas Weber|September 16, 2020|Nautilus
The actual amount spent on military equipment since he became president is much less, about $444 billion in constant dollars, or about 20 percent of the total.
Trump’s ABC News town hall: Four Pinocchios, over and over again|Glenn Kessler|September 16, 2020|Washington Post
He not only gives out pain — he is in constant, unrelenting pain.
The Story Behind Lee Marvin’s Liberty Valance Smile|Robert Ward|January 3, 2015|DAILY BEAST
It was like a constant assault, an almost stupefying catalogue of mindless racial insult and injury.
How Martin Luther King Jr. Influenced Sam Cooke’s ‘A Change Is Gonna Come’|Peter Guralnick|December 28, 2014|DAILY BEAST
The courage of this husband and father is a constant reminder of how much some sacrifice for exercising universal rights.
Behind Bars for the Holidays: 11 Political Prisoners We Want to See Free In 2015|Movements.Org|December 25, 2014|DAILY BEAST
His constant worship of his wife stands in stark contrast to scandals of the domestic nature in other sports.
The Story of the World’s Greatest Cricket Player|William O’Connor|December 24, 2014|DAILY BEAST
You have a pretty sexy online persona, what with the constant bikinis.
Anastasia Ashley, Surfer-Cum-Model, Rides The Viral Internet Wave|James Joiner|December 23, 2014|DAILY BEAST
I am satisfied now that my duties do not lie here, though the dear creatures here will be a constant motive for work and economy.
George Eliot's Life, Vol. I (of 3)|George Eliot
We remembered each other, and, each in our different lives, we were constant to our early love.
The Continental Monthly, Vol. 6, No 4, October, 1864|Various
To older people it is a source of constant surprise—the attentive interest which children bestow upon stories.
Special Method in Primary Reading and Oral Work with Stories|Charles Alexander McMurry
There are two constant factors in social life—the spirit of man and its environment.
The Legacy of Greece|Various
The Princess was a young and charming lady, very handsome, but in a state of constant depression.
Jennie Baxter, Journalist|Robert Barr
British Dictionary definitions for constant (1 of 2)
constant
/ (ˈkɒnstənt) /
adjective
fixed and invariable; unchanging
continual or continuous; incessantconstant interruptions
resolute in mind, purpose, or affection; loyal
noun
something that is permanent or unchanging
a specific quantity that is always invariablethe velocity of light is a constant
mathsa symbol representing an unspecified number that remains invariable throughout a particular series of operations
physicsa theoretical or experimental quantity or property that is considered invariable throughout a particular series of calculations or experiments
See logical constant
Derived forms of constant
constantly, adverb
Word Origin for constant
C14: from Old French, from Latin constāns standing firm, from constāre to be steadfast, from stāre to stand
British Dictionary definitions for constant (2 of 2)
Constant
/ (Frenchkɔ̃stɑ̃) /
noun
Benjamin (bɛ̃ʒamɛ̃). real name Henri Benjamin Constant de Rebecque. 1767–1830, French writer and politician: author of the psychological novel Adolphe (1816)
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.