marmalade (n.)
late 15c., from Middle French marmelade, from Portuguese marmelada "quince jelly, marmalade," from marmelo "quince," by dissimilation from Latin melimelum "sweet apple," originally "fruit of an apple tree grafted onto quince," from Greek melimelon, from meli "honey" (see Melissa) + melon "apple" (see malic). Extended 17c. to "preserve made from citrus fruit."