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hemocoel

[hee-muh-seel, hem-uh-]
noun Anatomy.
  1. a series of interconnected spaces between tissues and organs through which blood flows freely, unconfined by veins or arteries, occurring in several invertebrate groups, especially mollusks and arthropods.
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Origin of hemocoel

First recorded in 1830–40; hemo- + -coel
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018