• synonyms


noun, plural pro·so·mas, pro·so·ma·ta [proh-soh-muh-tuh] /proʊˈsoʊ mə tə/. Zoology.
  1. an anterior body region, especially the arthropod cephalothorax.
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Origin of prosoma

From New Latin, dating back to 1870–75; see origin at pro-2, -soma
Related formspro·so·mal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for prosoma

Historical Examples of prosoma

  • Prosoma as in the Mygalomorphae, except that the mesosternal area is long and narrow.

    Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3


British Dictionary definitions for prosoma


noun plural -mas or -mata (-mətə)
  1. zoology the head and thorax of an arachnid
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012