per
preposition
for each; for every.
per
1 American
[pur, per]
/ pɜr, pər /
preposition
-
for each; for every.
Membership costs ten dollars per year. This cloth is two dollars per yard.
-
by means of; by; through.
I am sending the recipe per messenger.
-
Also according to; in accordance with.
I delivered the box per your instructions.
He managed to monopolize the meeting, per usual.
adverb
per-
2
American
-
a prefix meaning “through,” “thoroughly,” “utterly,” “very”: pervert; pervade; perfect.
-
Chemistry. a prefix used in the names of inorganic acids and their salts that possess the maximum amount of the element specified in the base word: percarbonic (H 2 C 2 O5 ), permanganic (HMnO4 ), persulfuric (H 2 S 2 O8 ), acids; potassium permanganate (KMnO4 ); potassium persulfate (K 2 S 2 O8 ).
per.
3
American
abbreviation
-
percentile.
-
period.
-
person.
Per.
4
American
abbreviation
-
Persia.
-
Persian.
per-
1
British
prefix
-
through
pervade
-
throughout
perennial
-
away, beyond
perfidy
-
completely, throughly
perplex
-
(intensifier)
perfervid
-
indicating that a chemical compound contains a high proportion of a specified element
peroxide
perchloride
-
indicating that a chemical element is in a higher than usual state of oxidation
permanganate
perchlorate
-
(not in technical usage) a variant of peroxy-
persulphuric acid
per
2
British
/ pə, pɜː /
determiner
preposition
-
(esp in some Latin phrases) by; through
-
according to
as per specifications
-
informal as usual
PER
3
British
abbreviation
Usage
Per meaning a or an or for each occurs chiefly in technical or statistical contexts: miles per gallon; work-hours per week; feet per second; gallons of beer per person per year. It is also common in sports commentary: He averaged 16 points per quarter. Per is sometimes criticized in business writing in the sense “according to” and is rare in literary writing.
Etymology
Origin of per1
First recorded in 1580–90; from Latin: “through, by, for, for each”; see for
Origin of per-2
From Latin, combining form of per, and used as an intensive; per
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.
See Examples For:
Informa backed its 2026 guidance for 6% underlying revenue growth and double-digit growth in underlying earnings per share.
From The Wall Street Journal ● Oct. 6, 2026
We can calculate a company’s projected FCF yield by dividing the consensus estimates for free cash flow per share by a company’s share price.
From MarketWatch ● Oct. 6, 2026
Bakker and his then-wife Tammy Faye founded a Christian television programme called The PTL Club in 1974, which at its peak attracted 13 million viewers per day.
From BBC ● Oct. 6, 2026
Natural gas futures settled up 1% to $3.066 per mmBtu for the day, with analysts anticipating that this week’s EIA storage report will show smaller-than-usual builds in natural gas storage.
From The Wall Street Journal ● Oct. 6, 2026
Even botulism, the deadliest toxin ever known, needed at least 1 nanogram per kilogram to kill a human.
From "The Last Cuentista" by Donna Barba Higuera
The analysis also found that 64 percent of samples contained at least one per- and polyfluoroalkyl substance, also known as "forever chemicals", which are found throughout the environment and everyday products.
From Barron's ● Jan. 29, 2026
In addition to pesticides, there’s been growing concerns about PFAS, short for per- and poly-fluoroalkyl substances.
From Salon ● May 4, 2024
Man-made per- and polyfluoroalkyl substances, known as PFAS, are found in all sorts of industrial and consumer products, including carpets, rain jackets, and makeup.
From Slate ● Apr. 18, 2024
They’re PFAS: a class of man-made chemicals called per- and polyfluoroalkyl substances.
From New York Times ● Apr. 8, 2024
Perhaps the peaks store rain and distribute it more evenly, and per- haps, being more wooded, they draw more rainfall.
From "East of Eden" by John Steinbeck
We is first per. plural; Ye or You is second per. plural; They is third per. plural.
From English Grammar in Familiar Lectures by Samuel Kirkham
The verb and pronoun of the 1st per. sing. and 3d per. plur. are frequently incorporated into one word, and written taim I am, taid they are.
From Elements of Gaelic Grammar by Alexander Stewart
Lily had had an eye on it for some time, and would, of course, get it "ten per." off.
From Winnie Childs The Shop Girl by C. N. (Charles Norris) Williamson
And even with our ten per. off, it's forty per. profit for him.
From Winnie Childs The Shop Girl by C. N. (Charles Norris) Williamson
We'll take off sixty per. cent. if you wish.
From Plunkitt of Tammany Hall: a series of very plain talks on very practical politics, delivered by ex-Senator George Washington Plunkitt, the Tammany philosopher, from his rostrum—the New York County court house bootblack stand; Recorded by William L. Riordon by George Washington Plunkitt
The Theme or Root of the Verb is always found in the second Per. sing. of the imperative.
From Elements of Gaelic Grammar by Alexander Stewart
Per. & my nephew & the “Process” have made a great stride forward.
From The Letters of Anne Gilchrist and Walt Whitman by Anne Burrows Gilchrist
The Blaenavon Co., to which Per. is chemist, has gone into liquidation—& I don’t know whether it will continue to exist—or how soon in these dull times he may find a good opening elsewhere.
From The Letters of Anne Gilchrist and Walt Whitman by Anne Burrows Gilchrist
Per. p¾dÏzahr bezoar; p¾d protecting + zahr poison; cf.
From Webster's Unabridged Dictionary (2nd 100 Pages) by Noah Webster
States that maintain a PER of 6 percent or lower will not have to pay into SNAP, with the federal government continuing to pay 100 percent of the program.
From Slate ● Nov. 14, 2025
He is posting comparable numbers to his two previous MVP campaigns and ranks second to Jokic in PER and win shares.
From Washington Post ● Apr. 2, 2022
PER Lusulu Power had also sought financing of up to $2 billion for the project from ICBC, according to extracts of a term sheet dated August 2020 viewed by Reuters.
From Reuters ● Mar. 30, 2022
“Just one example cattle farmers have to pay $2600 PER COW a year,” Melissa Tate wrote.
From Seattle Times ● Oct. 8, 2021
PER: Faith, I had Some common ones, from out that vulgar grammar, Which he that cried Italian to me, taught me.
From Volpone; Or, the Fox by Ben Jonson
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.
