Why is the ninth month called September?
1803, from Modern Latin scarlatina (Sydenham, 1676), from Italian scarlattina (Lancelotti, 1527), fem. of scarlattino (adj.), diminutive of scarlatto "scarlet" (see scarlet). It is a synonym for scarlet fever, not a milder form of it. Related: Scarlattinal.
scarlatina scar·la·ti·na (skär'lə-tē'nə)
See scarlet fever.