green-colored stuff in plants, 1819, from French chlorophyle (1818), coined by French chemists Pierre-Joseph Pelletier (1788-1842) and Joseph Bienaimé Caventou (1795-1877) from chloro-, from Latinized form of Greek khlōros "pale green, greenish-yellow" (from PIE root *ghel- (2) "to shine," with derivatives denoting "green" and "yellow") + phyllon "a leaf" (from suffixed form of PIE root *bhel- (3) "to thrive, bloom").
type of modern metal musical instrument played through a reeded mouthpiece (originally meant as a more sonorous substitute for the clarinet in military bands), 1851, from French saxophone, named for Antoine Joseph "Adolphe" Sax (1814-1894), Belgian instrument maker who devised it c. 1840, + Greek -phonos "voiced, sounding" (see -phone).
His father, Charles Joseph (1791-1865) invented the less popular saxhorn (1844) in the trumpet family, also meant for military bands. The surname is a spelling variant of Sachs, Sacks, literally "Saxon." Related: Saxophonist.