Definition of phi in English:

phi

Line breaks: phi
Pronunciation: /fʌɪ
 
/

noun

  • 1The twenty-first letter of the Greek alphabet (Φ, φ), transliterated as ‘ph’ or (in modern Greek) ‘f’.
    More example sentences
    • This use of h was first established in Latin, which used ch, ph, and th for the Greek letters chi, phi, and theta.
    • The second main group puts together the GDAP1 proteins with those of the zeta, phi, omega, lambda, tau, beta, and theta classes, plus a few minor sets of sequences.
    • To design conserved primers, GST nucleotide and protein sequences from the classes phi, tau, and zeta were obtained from GenBank.
  • 1.1 (Phi) [followed by Latin genitive] Astronomy The twenty-first star in a constellation: Phi Eridani

symbol

Back to top  
  • 1 (φ) A plane angle.
  • 1.1 (φ) A polar coordinate. Often coupled with θ (theta).

Origin

Greek.

More definitions of phi

Definition of phi in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody