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ENGLISH DICTIONARY

Phi

/faɪ/ · noun

Meaning

Φ, the 21st letter of the Euclidean and modern Greek alphabet, usually romanized as "ph"..

Definitions by Sense

  1. Φ, the 21st letter of the Euclidean and modern Greek alphabet, usually romanized as "ph".
  2. (mathematics) The golden ratio.
  3. A visual illusion whereby a sequential pattern of lights produces a false sense of motion.

Example Sentences

[…] tolerance (Frenkel-Brunswik 1949) for it showed that those persons with the strongest defences against internal conflict, i.e. obsessionals and conversion hysterics, were those least able to perceive the reality-conflicting phenomenon of phi.
The illusion of movement in a highway construction sign is an instance of the phi phenomenon, which is also at work in motion pictures and television.
Is it the phi phenomenon or the persistence of vision? Originally, the illusion of motion that movies excel at was thought to be the effect of the persistence of vision.

Synonyms for phi

Antonyms for phi

Related Words

Word Forms

Usage Notes

Choose a synonym only when it preserves the intended meaning, tone, and grammar of the full sentence.

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Frequently Asked Questions

What does phi mean?

Phi means Φ, the 21st letter of the Euclidean and modern Greek alphabet, usually romanized as "ph"..

What is a synonym for phi?

The closest synonym depends on the sentence and intended sense.

What is the opposite of phi?

The opposite depends on the specific sense.

How do you use phi in a sentence?

[…] tolerance (Frenkel-Brunswik 1949) for it showed that those persons with the strongest defences against internal conflict, i.e. obsessionals and conversion hysterics, were those least able to perceive the reality-conflicting phenomenon of phi.

Sources & Attribution

FreeDictionaryAPI.com / Wiktionary · Original source · CC BY-SA 4.0

Dictionary data is provided by FreeDictionaryAPI.com and sourced from Wiktionary under its stated license.