Music. the set of syllables, do, re, mi, fa, sol, la, and ti, sung to the respective tones of the scale. All but do and ti are attributed to Guido d'Arezzo.
2.
the system of singing tones to these syllables.
verb (used without object), sol-faed, sol-faing.
3.
to use the sol-fa syllables in singing, or to sing these syllables.
(US) to use tonic sol-fa syllables in singing (a tune)
Word Origin
C16: see gamut
Word Origin and History for sol-fa
n.
"syllables used in solmization taken collectively," 1540s, from Italian, from Medieval Latin sol and fa, two notes of the musical scale (see gamut). As a verb from 1560s; cf. solfeggio "use the sol-fa system" (1774), from Italian solfeggiare.