Per
preposition
For each; for every.
The apples cost $1.50 per kilogram.
Often appears as...
- per hour
- per person
preposition
By means of; by way of; through.
Please send the package per courier.
Often appears as...
- per email
- per phone
preposition
As expressed or indicated by; in accordance with.
We acted per the instructions given.
Often appears as...
- per instructions
- per the rules
preposition
For each; for every.
The apples cost $1.50 per kilogram.
Often appears as...
- per hour
- per person
preposition
By means of; by way of; through.
Please send the package per courier.
Often appears as...
- per email
- per phone
preposition
As expressed or indicated by; in accordance with.
We acted per the instructions given.
Often appears as...
- per instructions
- per the rules
Definition 1 of 3
Pro Tip 1/3Quantifying Costs
Use 'per' to talk about prices in relation to a unit of measure.
Gasoline is sold per litre.
Pro Tip 2/3Rate Frequency
Use 'per' to specify the frequency of an occurrence within a time period.
She goes to the gym five times per week.
Pro Tip 3/3Statistical Figures
Use 'per' when providing statistical information, such as ratios or averages.
There are 35 students per teacher in this school.
Pro Tip 1/3Quantifying Costs
Use 'per' to talk about prices in relation to a unit of measure.
Gasoline is sold per litre.
Pro Tip 2/3Rate Frequency
Use 'per' to specify the frequency of an occurrence within a time period.
She goes to the gym five times per week.
Pro Tip 3/3Statistical Figures
Use 'per' when providing statistical information, such as ratios or averages.
There are 35 students per teacher in this school.
Pro Tip 1/3Quantifying Costs
Use 'per' to talk about prices in relation to a unit of measure.
Gasoline is sold per litre.
Pro Tip 2/3Rate Frequency
Use 'per' to specify the frequency of an occurrence within a time period.
She goes to the gym five times per week.
Pro Tip 3/3Statistical Figures
Use 'per' when providing statistical information, such as ratios or averages.
There are 35 students per teacher in this school.
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Video examples
What is Zeno's Dichotomy...
In other words, it says that all motion is impossible. This conclusion is clearly absurd, but where is the flaw in the logic? To resolve the paradox, it helps to turn the story into a math problem. Let's supposed that Zeno's house is one mile from the park and that Zeno walks at one mile per hour.
Video examples
Garth Lenz: The true...
twice as much greenhouse gases are sequestered in the boreal per acre than the tropical rainforests. And what we're doing is we're destroying this carbon sink, turning it into a carbon bomb. And we're replacing that with the largest industrial project in the history of the world,
Video examples
Could we create dark...
Now, the detectors take snapshots of about a billion of these collisions per second to find signs of extremely rare massive particles. To add to the difficulty, the particles we're looking for may be unstable and decay into more familiar particles before reaching the sensors.
Video examples
How high can you count...
Let's forget about finger sections for a moment and look at the simplest case of having just two options per finger, up and down. This won't allow us to represent powers of ten, but it's perfect for the counting system that uses powers of two, otherwise known as binary.
Video examples
How does your body know...
at the rate of one digit per second. Over time, instead of taking two minutes, it began taking him as long as five. Life in the lonely, dark cave had warped Siffre's own perception of time despite his brain's best efforts to keep him on track.
Video examples
Can you solve the...
has embarked on a new flying around the world nonstop in a plane of his own design. Able to travel consistently at the incredible speed of one degree longitude around the equator per minute, the plane would take six hours to circle the world.
Video examples
Economics of climate...
estimate that today the world pays a hundred and one billion dollars in subsidies to green energy but in a generations time the bill is not going to go down we will owe two hundred and twenty three billion dollars per year in
Video examples
Venus 101 PIPE National...
at speeds up to 224 miles per hour. Faster than some category five hurricanes. The atmosphere is so thick that it creates a surface pressure similar to what it would be about half a mile deep in the Earth's oceans.
Video examples
Largest Lizard on Earth...
It measures the force of the bite of an animal. So, if I bite on this here it should register... about 120 pounds per square inch. To get the dragons to bite, we're going to need a little bit of encouragement
Video examples
Is it possible to create...
The universe is bustling with matter and energy. Even in the vast apparent emptiness of intergalactic space, there's one hydrogen atom per cubic meter.
Video examples
What is Zeno's Dichotomy...
In other words, it says that all motion is impossible. This conclusion is clearly absurd, but where is the flaw in the logic? To resolve the paradox, it helps to turn the story into a math problem. Let's supposed that Zeno's house is one mile from the park and that Zeno walks at one mile per hour.
Video examples
Garth Lenz: The true...
twice as much greenhouse gases are sequestered in the boreal per acre than the tropical rainforests. And what we're doing is we're destroying this carbon sink, turning it into a carbon bomb. And we're replacing that with the largest industrial project in the history of the world,
Video examples
Could we create dark...
Now, the detectors take snapshots of about a billion of these collisions per second to find signs of extremely rare massive particles. To add to the difficulty, the particles we're looking for may be unstable and decay into more familiar particles before reaching the sensors.
Video examples
How high can you count...
Let's forget about finger sections for a moment and look at the simplest case of having just two options per finger, up and down. This won't allow us to represent powers of ten, but it's perfect for the counting system that uses powers of two, otherwise known as binary.
Video examples
How does your body know...
at the rate of one digit per second. Over time, instead of taking two minutes, it began taking him as long as five. Life in the lonely, dark cave had warped Siffre's own perception of time despite his brain's best efforts to keep him on track.
Video examples
Can you solve the...
has embarked on a new flying around the world nonstop in a plane of his own design. Able to travel consistently at the incredible speed of one degree longitude around the equator per minute, the plane would take six hours to circle the world.
Video examples
Economics of climate...
estimate that today the world pays a hundred and one billion dollars in subsidies to green energy but in a generations time the bill is not going to go down we will owe two hundred and twenty three billion dollars per year in
Video examples
Venus 101 PIPE National...
at speeds up to 224 miles per hour. Faster than some category five hurricanes. The atmosphere is so thick that it creates a surface pressure similar to what it would be about half a mile deep in the Earth's oceans.
Video examples
Largest Lizard on Earth...
It measures the force of the bite of an animal. So, if I bite on this here it should register... about 120 pounds per square inch. To get the dragons to bite, we're going to need a little bit of encouragement
Video examples
Is it possible to create...
The universe is bustling with matter and energy. Even in the vast apparent emptiness of intergalactic space, there's one hydrogen atom per cubic meter.
Example 1 of 10
Quote examples
Jeffrey Archer
English Politician
I learnt a lot about myself, I learnt a lot about other people and the problems they have. If I was lucky enough to live to a hundred, how I will feel about two per cent of my life being that way, I don't know.
Quote examples
Hans Haacke
German Artist
When works of art are presented like rare butterflies on the walls, they're decontextualized. We admire their beauty, and I have nothing against that, per se. But there is more to art than that.
Quote examples
Haruki Murakami
Japanese Writer
As long as possible, I would really like to complete one marathon per year. Though my time has been slowing down as I get older, it has become a very important part of my life.
Quote examples
Johnny Marr
English Musician
No one has any respect for someone who can play a million notes per minute but can't put together a decent tune that someone can sing to or feel some sort of emotion from.
Quote examples
Michael Schumacher
German Celebrity
I like to share my life, and spend time with someone I love. That has worked 100 per cent with my wife.
Quote examples
Bill Gates
American Businessman
Well-spent aid money is saving lives for a few thousand dollars per life saved.
Quote examples
Aaron Ramsey
Welsh Athlete
When you're playing, it's important to focus 100 per cent on what you're doing.
Quote examples
Sean Bean
English Actor
If you're going to support a football team, do it 100 per cent.
Quote examples
Jupp Heynckes
German Athlete
I adore football, and if I do a job, I do it 100 per cent.
Quote examples
Josh Ryan Evans
American Actor
I realized my life was not going to be, per se, normal.
Quote examples
Jeffrey Archer
English Politician
I learnt a lot about myself, I learnt a lot about other people and the problems they have. If I was lucky enough to live to a hundred, how I will feel about two per cent of my life being that way, I don't know.
Quote examples
Hans Haacke
German Artist
When works of art are presented like rare butterflies on the walls, they're decontextualized. We admire their beauty, and I have nothing against that, per se. But there is more to art than that.
Quote examples
Haruki Murakami
Japanese Writer
As long as possible, I would really like to complete one marathon per year. Though my time has been slowing down as I get older, it has become a very important part of my life.
Quote examples
Johnny Marr
English Musician
No one has any respect for someone who can play a million notes per minute but can't put together a decent tune that someone can sing to or feel some sort of emotion from.
Quote examples
Michael Schumacher
German Celebrity
I like to share my life, and spend time with someone I love. That has worked 100 per cent with my wife.
Quote examples
Bill Gates
American Businessman
Well-spent aid money is saving lives for a few thousand dollars per life saved.
Quote examples
Aaron Ramsey
Welsh Athlete
When you're playing, it's important to focus 100 per cent on what you're doing.
Quote examples
Sean Bean
English Actor
If you're going to support a football team, do it 100 per cent.
Quote examples
Jupp Heynckes
German Athlete
I adore football, and if I do a job, I do it 100 per cent.
Quote examples
Josh Ryan Evans
American Actor
I realized my life was not going to be, per se, normal.
Example 1 of 10
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