per

1 of 4

preposition

ˈpər 

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

per instructions

—often used with as

as per usual

Using Per as a Preposition: Usage Guide

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

per

2 of 4

adverb

: for each : apiece

a bargain at $3.50 per

per

3 of 4

abbreviation

1

period

2

person

per-

4 of 4

prefix

1

: throughout : thoroughly

peruse

2

a

: 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

Synonyms of per

Preposition

• via
• by
• with
• through
• in

Adverb

• each

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

Recent Examples on the Web

Preposition

Entering Week 6, Kansas City ranked fourth in the NFL in EPA per play on offense, which would be its best finish since the 2022 campaign. — Rohan Nadkarni, NBC news, 19 Oct. 2026

In August 2021, Qatar signed another agreement committing $40 million to a cash assistance program that would give nearly 100,000 Palestinian households $100 per month for four months. — Eric Cortellessa, Time, 18 Oct. 2026

While hitting that cadence awaits LC-36A’s reconstruction, the company recently filed a request to expand that to 50 launches per year. — Richard Tribou, The Orlando Sentinel, 18 Oct. 2026

Jaime had worked to increase membership, and then helped launch a strike, in 2022, which won pay increases of between fifty-five and eighty per cent. — Benjamin Wallace-Wells, New Yorker, 18 Oct. 2026

Word History

Etymology

Preposition

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

Prefix

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

First Known Use

Preposition

14th century, in the meaning defined at sense 1

Adverb

1899, in the meaning defined above

Phrases Containing per

• an/per hour
• as per
• as per usual
• pay-per-view
• per- and polyfluoroalkyl substances
• per annum
• per capita
• per cent
• per centum
• per contra
• per curiam
• per diem
• per head
• per mensem
• per mill
• per se
• per second per second
• per stirpes

Rhymes for per

• birr
• blur
• bur
• cur
• er
• fir
• fur
• furr
• gurr
• her
• murr
• myrrh

Kids Definition

per

preposition

(ˈ)pər

1

: by means of

2

: to or for each

$10 per day

3

: as indicated by : according to

per list price

Medical Definition

per

1 of 2 preposition

ˈpər 

: by the means or agency of : by way of : through

enter through the mouth lining and per the bloodstream to the stomach

—Sydney (Australia) Bulletin

blood per rectum

see per os

per

2 of 2 abbreviation

1

period; periodic

2

person

Legal Definition

per

preposition

ˈpər 

: as stated by

—used to indicate the author of an opinion with which the majority of judges concur