How to Pronounce "pi"
word
/ˈpaɪ/
py
/pˈaɪ/
py
Definition
Pi is a mathematical constant, the ratio of a circle’s circumference to its diameter, approximately equal to 3.14159. It is often symbolized as π and used in geometry and calculations involving circles.
IPA Transcription
American English
/ˈpaɪ/
British English
/pˈaɪ/
Simplified Pronunciation
US
py
UK
py
Listen in Context
The value of pi is about 3.14.
We use pi to find the area of a circle.
The symbol for pi is π.
On Pi Day, math lovers celebrate pi with fun activities.