- 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.
- 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
SynonymsSee more synonyms for constant on Thesaurus.com
- Paul Hen·ri Ben·ja·min Bal·luat [pawl ahn-ree ban-zha-man ba-lwa] /pɔl ɑ̃ˈri bɛ̃ ʒaˈmɛ̃ baˈlwa/. Paul d'Estournelles de Constant.
- Jean Jo·seph Ben·ja·min [zhahn zhaw-zef ban-zha-man] /ʒɑ̃ ʒɔˈzɛf bɛ̃ ʒaˈmɛ̃/, 1845–1902, French painter.
Examples from the Web for constant
He not only gives out pain — he is in constant, unrelenting pain.The Story Behind Lee Marvin’s Liberty Valance Smile
January 3, 2015
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’
December 28, 2014
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
December 25, 2014
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
December 24, 2014
You have a pretty sexy online persona, what with the constant bikinis.Anastasia Ashley, Surfer-Cum-Model, Rides The Viral Internet Wave
December 23, 2014
The surgeon was in constant attendance, but the malady baffled all his skill.Brave and Bold
"You must inquire of the stewards or of himself," was the constant reply.The Christmas Banquet (From "Mosses From An Old Manse")
Our pledge to these principles is constant, because we believe in their rightness.
LOVE them, and show our love by a constant desire and effort to please them.An Explanation of Luther's Small Catechism
It was a constant surprise to Angelique that she had unbosomed herself at once to Felicien.The Dream
- fixed and invariable; unchanging
- continual or continuous; incessantconstant interruptions
- resolute in mind, purpose, or affection; loyal
- 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
- Benjamin (bɛ̃ʒamɛ̃). real name Henri Benjamin Constant de Rebecque. 1767–1830, French writer and politician: author of the psychological novel Adolphe (1816)
Word Origin and History for constant
late 14c., "steadfast, resolute," from Old French constant (14c.) or directly from Latin constantem (nominative constans) "standing firm, stable, steadfast, faithful," present participle of constare, from com- "together" (see com-) + stare "to stand," from PIE root *sta- "to stand" (see stet). Of actions and conditions from 1650s. Related: Constantly.
1832 in mathematics and physics, from constant (adj.).
- Continually occurring; persistent.
- Unchanging in nature, value, or extent; invariable.
- A quantity assumed to have a fixed value in a specified mathematical context.
- An experimental or theoretical condition, factor, or quantity that does not vary or that is regarded as invariant in specified circumstances.
- 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.