(Entry lacking, Adler reports, in mss AFV.)
LSJ s.v. sunalifh/ [sic]: 'stopping of a hiatus, coalescing of two syllables into one, either by synaeresis, crasis, or elision' (web address 1).
See under alpha 383, alpha 543, gamma 406, epsilon 1363, epsilon 1418, eta 36, kappa 251, kappa 1465, omicron 896, pi 127, phi 352.