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mesosoma

noun
meso·​soma | \"+\
plural mesosomata

Definition of mesosoma 

: the middle region of the body of various invertebrates especially when this cannot readily be analyzed into its primitive segmentation (as in most mollusks and in arachnids)

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Other Words from mesosoma

mesosomatic \"+ \ adjective

History and Etymology for mesosoma

New Latin, from mes- + -soma

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