Medical Definition of body
1a: the organized physical substance of an animal or plant either living or dead: as: the material part or nature of a human being: a dead organism : corpseb: a human being
2a: the main part of a plant or animal body especially as distinguished from limbs and head : trunkb: the main part of an organ (as the uterus)
3: a kind or form of matter : a material substance—see ketone body
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