pro·​so·​ma | \ (ˌ)prō-ˈsō-mə How to pronounce prosoma (audio) \

Definition of prosoma

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

Examples of prosoma in a Sentence

Recent Examples on the Web The head, or prosoma, houses most vital organs, including the heart and the brain. National Geographic, "Atlantic horseshoe crab," 20 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prosoma.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of prosoma

1853, in the meaning defined above

History and Etymology for prosoma

New Latin, from Greek pro- + sōma body

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Time Traveler for prosoma

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The first known use of prosoma was in 1853

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Cite this Entry

“Prosoma.” Dictionary, Merriam-Webster, Accessed 18 Apr. 2021.

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