1. the anterior body region of arachnids and some other arthropods, containing the head and thorax
Usage: biological; plural form

Examples

• The spider’s prosomata contains its eyes, mouthparts, and legs.
• Researchers examined the prosomata of various arachnid specimens.
• The prosomata is clearly distinct from the opisthosoma in most spiders.
• Damage to the prosomata can affect the spider’s ability to feed.
• The prosomata houses the spider’s brain and digestive organs.