1The twenty-first letter of the Greek alphabet (Φ, φ), transliterated as ‘ph.’.
‘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.’
1.1PhiAstronomy followed by Latin genitiveThe twenty-first star in a constellation.