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| pro·so·ma [ prō sṓmə ] (plural pro·so·mas or pro·so·ma·ta [ prō sṓmətə ]) |
noun |
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| Definition: |
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area near spider's head: the region near the head of spiders and some related arthropods, composed of fused segments of head and thorax
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| [Late 19th century. <pro-2 + Greek sōma "body"] |
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