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fatbody

[fat-bod-ee]
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.
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Also fat bod·y, fat-bod·y.

Origin of fatbody

First recorded in 1865–70; fat + body
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018