Medical Definition of pineapple
1: a tropical monocotyledonous plant (Ananas comosus of the family Bromeliaceae, the pineapple family) that has rigid spiny-margined recurved leaves and a short stalk with a dense oblong head of small abortive flowers
2: the multiple fruit of the pineapple that consists of the succulent fleshy inflorescence and whose juice is the source of the proteolytic enzyme bromelain
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