fa; fah
The fourth note of a major scale in movable-do solfège. Used in music education and vocal exercises.
from Italian
In movable-do solfège, fa is the fourth note of the major scale.
The note F in the fixed-do system, where each syllable corresponds to a specific pitch. Common in classical music contexts.
In fixed-do, fa refers to the note F.
the "fa" pseudo-column of the Japanese syllabary table
Borrowed from Italian 'fa', ultimately from the first syllable of 'famuli' in the medieval hymn 'Ut queant laxis'.