Marmalade (märm&adot_;lād), n. [F. marmelade, Pg. marmelada, fr. marmélo a quince, fr. L. melimelum honey apple, Gr. melimhlon a sweet apple, an apple grafted on a quince; meli honey + mh^lon 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 consistency.
[1913 Webster]

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. [1913 Webster]