Ancient Greek: φεῖ
|Wikipedia article on phi|
phi (plural phis)
- The twenty-first letter of the Classical and Modern Greek, the twenty-third letter of Old and Ancient.
- A visual illusion caused by lights turning on and off in a sequential pattern that implies motion.
- (mathematics) The symbol for the golden ratio.
phi m (plural phi)
- Obsolete spelling of fi (used in Portugal until September 1911 and died out in Brazil during the 1920s).
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