phi
/faɪ/
noun
- The 21st letter of the Greek alphabet (Φ, φ).
- The Greek letter phi is often used in mathematics and science.
- She wrote a small phi on the chalkboard to mark the angle.
- In the word 'philosophy,' the first sound is represented by phi.
- The golden ratio (approximately 1.618), often represented by the symbol φ.
- Artists and architects have used phi for centuries to create balanced designs.
- The golden ratio, or phi, appears in many natural patterns like seashells.
- In math class, we learned that phi is an irrational number.