\ˈpər \

Definition of per 

(Entry 1 of 4)

1 : by the means or agency of : through per bearer

2 : with respect to every member of a specified group : for each

3 : according to often used with as per instructionsas per usual

per

adverb

Definition of per (Entry 2 of 4)

: for each : apiece a bargain at $3.50 per

Definition of per (Entry 3 of 4)

1 period

2 person

per-

prefix

Definition of per- (Entry 4 of 4)

1 : throughout : thoroughly peruse

2a : containing the largest possible or a relatively large proportion of a (specified) chemical element perchloroethylene

b : containing an element in its highest or a high oxidation state perchloric acid

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Synonyms for per

Synonyms: Preposition

by, in, through, via, with

Synonyms: Adverb

all, apiece, each, per capita

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Using Per as a Preposition: Usage Guide

Preposition

Per occurs most frequently in business contexts; its use outside such contexts is often criticized but is quite widespread, especially in sense 2. Its most common and natural nonbusiness uses always involve figures, usually in relation to price $150 per performance , automobiles 32 miles per gallon 55 miles per hour , or sports. averages 15 points and 9 rebounds per game

Examples of per in a Sentence

Preposition

The speed limit is 35 miles per hour. The car gets 32 miles per gallon. He averages 15 points per game. Per your advice, I accepted their offer.

Adverb

you can have them at 50 cents per or three for $1.25
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Recent Examples on the Web: Preposition

That means the gaming monitor can refresh all of the graphics on its screen at a rate of 144 times per second, providing those smooth graphics gamers crave. Stefan Etienne, The Verge, "MSI Oculux NXG251 monitor review: faster isn’t always better," 29 Nov. 2018 Out of any day of the week, American bikers averaged the fastest speed—13.67 miles per hour—on Tuesdays, and runners averaged the fastest pace—9 minutes and 34 seconds per mile—that day as well. Jenny Mccoy, SELF, "The 2 Things That Will Help Motivate You to Be More Active, According to a New Strava Report," 28 Nov. 2018 Assuming a reasonable velocity of 20 kilometers per second, an iron meteorite with a diameter of about 1.5 kilometers (just under a mile) would make a crater this size. Scott K. Johnson, Ars Technica, "Huge, previously unknown impact crater found beneath Greenland’s ice," 18 Nov. 2018 The swift winds that at one point advanced the flames at a rate of one football field per second have now died down. Umair Irfan, Vox, "The Paradise fire is catastrophic. And the wildfire threat to California is only growing.," 17 Nov. 2018 Vinyl Me, Please album subscription club, $229 per year, vinylmeplease.com. Corey Seymour, Vogue, "11 Gifts For Your Favorite Music Lover," 16 Nov. 2018 When opened, the diversion will move as much as 75,000 cubic feet per second of river water out into the basin. Nate Berg, Curbed, "Can engineering save Louisiana’s coastline?," 7 Nov. 2018 According to Simpson, Babor creates about 40 million (yes, million) tiny glass vials per year. Sarah Kinonen, Allure, "The Importance of Germany in the Skin-Care Industry," 24 Oct. 2018 This will check your download speed in mbps, or megabits per second. Alexander George, Popular Mechanics, "How to Test Your Wi-Fi Speed," 15 Oct. 2018

Recent Examples on the Web: Adverb

That’s helped bring per-pound retail prices for beef patties down 16% from their September 2015 high of $5.12 to about $4.31 in June, according to U.S. Department of Agriculture data. Jacob Bunge, WSJ, "Chicken, Turkey and Tuna Have a Beef With Your Burger," 30 June 2018 Anderton, the Collierville, Tennessee, native averaged 11.78 assists per set and 2.00 digs per set as Samford improved to 6-6 in SoCon play. Samford Athletics, AL.com, "Samford volleyball preps for two key home matches this weekend," 2 Nov. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'per.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of per

Preposition

14th century, in the meaning defined at sense 1

Adverb

1899, in the meaning defined above

History and Etymology for per

Preposition

Latin, through, by means of, by — more at for

Prefix

Latin, through, throughout, thoroughly, detrimental to, from per

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Learn More about per

Dictionary Entries near per

pep up

Pepys

Pequot

per

per-

Peracarida

per accidens

Statistics for per

Last Updated

4 Dec 2018

Look-up Popularity

Time Traveler for per

The first known use of per was in the 14th century

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More Definitions for per

English Language Learners Definition of per

: for each

: as directed by or stated in

\ˈpər \

Kids Definition of per

1 : to or for each It cost us ten dollars per day.

2 : as directed by Construction was done per instructions.

\ˈpər \

Medical Definition of per 

(Entry 1 of 2)

: by the means or agency of : by way of : through enter through the mouth lining and per the bloodstream to the stomachSydney (Australia) Bulletin blood per rectum — see per os

Medical Definition of per (Entry 2 of 2)

1 period; periodic

2 person

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\ˈpər \

Legal Definition of per 

: as stated by used to indicate the author of an opinion with which the majority of judges concur

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More from Merriam-Webster on per

Rhyming Dictionary: Words that rhyme with per

Thesaurus: All synonyms and antonyms for per

Spanish Central: Translation of per

Nglish: Translation of per for Spanish Speakers

Britannica English: Translation of per for Arabic Speakers

Comments on per

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