phi /fī or fē/

1. The twenty-first letter (Φ, φ) of the Greek alphabet, orig as aspirated p (as in upheave), now pronounced as f and transliterated ph
2. As a Greek numeral φˈ = 500, ˌφ = 500000

PHI

Permanent health insurance

• needle valves
• needlewoman
• needlewomen
• needlework
• needleworks
• needlier
• needliest
• needling
• needly
• needment
• needments
• need one's head examined
• needs
• needs must
• needy
• needy-hood
• neeld
• neele
• neem
• neemb
• neems
• neem tree
• neep
• neeps
• ne'er