Definition of phi Phi
/fajˈ/ - [fay] - phi
We found 6 definitions of phi from 4 different sources.
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What does phi mean?
WordNet
NounPlural: phis |
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| phi - the 21st letter of the Greek alphabet | ||
| alphabetic character, letter of the alphabet, letter a written message addressed to a person or organization; "mailed an indignant letter to the editor" | ||
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Wiktionary 
- phi (Noun)
The twenty-first letter of the Classical Classical and Modern Greek , the twenty-second letter of Old Old and Ancient Ancient . - phi (Noun)
A visual illusion caused by lights turning on and off in a sequential pattern that implies motion. - phi (Noun)
The symbol for the golden ratio .
Wikipedia 
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letter
Phi (uppercase/lowercase Φ φ), is the letter of the Greek alphabet, used to represent the "ph" sound in Ancient. This sound became the same as "f" around 300 BC, and in Modern Greek the letter denotes the "f" sound. In the system of Greek numerals, it has a value of 500. Letters that came from it include the Roman F and Cyrillic Ф. In English, φ is pronounced like "f" but translitterated (re-written) as "ph" in words which originate in Ancient Greek. In those words which originate in Modern Greek, such as feta cheese, φ is translitterated as "f".
Part of speech
🔤- phi, noun, singular of phis.
