How to Pronounce "phi"
word
Definition
'Phi' is the name of the Greek letter φ, often used in mathematics and science to represent the golden ratio (approximately 1.618). It is also used as a symbol in physics and engineering.
Listen in Context
The Greek letter phi is often used in mathematics.
Phi represents the golden ratio, about 1.618.
Engineers use phi as a symbol for angles.
If you study architecture, you'll learn how phi shapes beautiful buildings.