1911 Encyclopædia Britannica/Marmalade

MARMALADE (adopted from Fr. marmelade, from marmelo, a quince, derived through the Lat. melimelum, from Gr. μέλι, honey, and μῆλον, an apple, an apple grafted on a quince), a preserve originally made of quinces, but now commonly of Seville oranges. The “marmalade-tree” (Lucuma mammosa) bears a fruit whose thick pulp resembles marmalade and is called natural marmalade. “Marmalade box” is the name of the fruit of the Genipa Americana, which opens in the same manner as a walnut, the nut being replaced by a soft pulp.