fat body

noun, plural fat·bod·ies. Entomology.

  1. a diffuse tissue of insects, having numerous functions including food storage, metabolism, and storage of wastes and in some insects modified as a light-producing organ.

noun zoology

  1. a mass of fatty tissue in insects, used as an energy source during hibernation and metamorphosis
  2. a similar tissue mass in amphibians and reptiles
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