Marmalade \Mar"ma*lade\, n. [F. marmelade, Pg. marmelada, fr. marm['e]lo a quince, fr. L. melimelum honey apple, Gr. ? a sweet apple, an apple grafted on a quince; ? honey + ? apple. Cf. Mellifluous, Melon.]

A preserve or confection made of the pulp of fruit, as the quince, pear, apple, orange, etc., boiled with sugar, and brought to a jamlike consistence.

Marmalade tree (Bot.), a sapotaceous tree (Lucuma mammosa) of the West Indies and Tropical America. It has large obovate leaves and an egg-shaped fruit from three to five inches long, containing a pleasant-flavored pulp and a single large seed. The fruit is called marmalade, or natural marmalade, from its consistency and flavor.

Source: Webster's Revised Unabridged Dictionary (1913)