pi
7
3.9
- noun
- /paɪ/
- Specialized
:
pi
- Pi is a famous number, equal to about 3.14, that helps us find the distance around a circle.
That's why I was like, wait, when she knows the Pi, you know, she knows all the numbers π.
- That's why I was like, wait, when she knows the Pi, you know, she knows all the numbers π.
- We're used to a half, one, Pi, E squared to two.
- To know P Well, if I don't know Pi going to go looking for it.
Examples
-
Pi is the ratio of the circumference of a circle to its diameter, right?
-
In mathematics, pi represents the constant that helps us calculate the area of a circle.
-
I believe in the number Pi.
-
And they taught us all about Pi.
-
Today is the nerdiest of all days: Pi Day.
-
Pi is the ratio of the circumference, and when you put it...
-
Pi is equal to 3.1415...
-
At the board, the math teacher droned on about Pythagoras and pi.
Fiction book (1995) -
Fans celebrate pi on March 14, Pi Day, by eating pies, reciting digits, and engaging in other pi-related activities.
Blog text (6) -
Pi is the ratio of the circumference of a circle to its diameter, approximately equal to pi.
Compounds
Surface Forms
Etymology
Pi for the number comes from a Greek idea linked to the words perimeter or periphery, which mean 'around'. A helpful way to remember this is that pi measures the distance 'around' a circle compared to its width, so that is why pi is the circle constant.