noun, plural pro·so·mas, pro·so·ma·ta [proh-soh-muh-tuh] /proʊˈsoʊ mə tə/. Zoology.

an anterior body region, especially the arthropod cephalothorax.

Origin of prosoma

From New Latin, dating back to 1870–75; see origin at pro-2, -soma
Related formspro·so·mal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for prosoma

Historical Examples of prosoma

British Dictionary definitions for prosoma


noun plural -mas or -mata (-mətə)

zoology the head and thorax of an arachnid
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