English Explanatory Dictionary

phi

English dictionary entry

Meanings

noun
  1. Φ, the 21st letter of the Euclidean and modern Greek alphabet, usually romanized as "ph".
  2. The golden ratio.
  3. A visual illusion whereby a sequential pattern of lights produces a false sense of motion.
name
  1. Abbreviation of Philadelphia.
noun
  1. Initialism of protected health information.

Pronunciation

/faɪ/ En-us-phi.ogg /fiː/ En-us-phi long e.ogg

Word forms

phi phis

Etymology

From Late Latin phi, from Ancient Greek φεῖ (pheî).

Derived words

phi-feature phinary phi phenomenon
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