mezzo

[met-soh, med-zoh, mez-oh] /ˈmɛt soʊ, ˈmɛd zoʊ, ˈmɛz oʊ/
adjective
1.
middle; medium; half.
noun, plural mezzos.
2.
a mezzo-soprano.
Origin
1805-15; < Italian < Latin medius middle
British Dictionary definitions for mezzo

mezzo

/ˈmɛtsəʊ/
adverb
1.
moderately; quite: mezzo forte, mezzo piano
noun (pl) -zos
2.
See mezzo-soprano (sense 1)
Word Origin
C19: from Italian, literally: half, from Latin medius middle
Word Origin and History for mezzo
adj.

"half, moderate," Italian mezzo, literally "middle," from Latin medius (see medial (adj.)). Also used in combinations such as mezzo-soprano (1753) and mezzotint (1738).