Dictionary

prosoma

noun pro·so·ma \(ˌ)prō-ˈsō-mə\

Definition of PROSOMA

:  the anterior region of the body of an invertebrate (as an arachnid) especially when the segmentation is suppressed or obscured; especially :  cephalothorax

Origin of PROSOMA

New Latin, from Greek pro- + sōma body
First Known Use: 1872

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