Mi \Mi\, n. [It.] (Mus.) A syllable applied to the third tone of the scale of C, i. e., to E, in European solmization, but to the third tone of any scale in the American system.
Source: Webster's Revised Unabridged Dictionary (1913)
Centesimo \Cen*tes"i*mo\, n.; pl. -mi. [It. & Sp.] A copper coin of Italy and Spain equivalent to a centime.