paleospinothalamicWiktionary 原文英美构词拆解paleopaleo-前缀spinothalamicspinothalamic词干paleo-Old; ancient or primitive (Combining form of old, ancient, and primitive) · Related to paleontology.词源说明From paleo- + spinothalamic.释义形容词adjective1(anatomy) Of or related to the primitive transmission system for diffuse pain.