In arthropods like spiders and crustaceans, the combined head and thorax (chest) region fused into one body section.
From Greek 'kephale' (head) + 'thorax' (chest). This term was created in zoology to describe the unified body region in arthropods where the head and thorax are not clearly separated as in insects.
A cephalothorax is one of nature's brilliant design choices—by fusing the head and chest together, crustaceans and arachnids can attach legs and sensory organs directly to one unified region, making them incredibly efficient predators and survivors.
Complete word intelligence in one call. Free tier — 50 lookups/day.