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phi

Syllabification: phi

Definition of phi in English:

noun

1The twenty-first letter of the Greek alphabet (Φ, φ), transliterated as ‘ph.’.
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

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1 (φ) A plane angle.
1.1 (φ) A polar coordinate. Often coupled with theta.

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