pineapple, (Ananas comosus), perennial plant of the family Bromeliaceae and its edible fruit. Pineapple is native to tropical and subtropical America and has been introduced elsewhere. The fruit has become a characteristic ingredient in the meat, vegetable, fish, and rice dishes of what is loosely termed Pan-Asian cuisine. The fruit is eaten fresh where available and in canned form worldwide. In the United States and in Europe it is sometimes used as a pastry filling or in baked desserts.
The plant has 30 to 40 stiff succulent leaves closely spaced in a rosette on a thick fleshy stem. In commercial varieties about 15 to 20 months after planting, a determinate inflorescence forms on a flower stalk 100–150 mm (4–6 inches) in length. The originally separate light purple flowers, together with their bracts, each attached to a central axis core, become fleshy and fuse to form the pineapple fruit, which ripens five to six months after flowering begins. Fruits of commercial varieties range from 1 to 2 kg (2 to 4 pounds) in weight.