so·ma·to·top·ic \| ̷ ̷ ̷ ̷ ̷ ̷|täpik\adjective alsoso·ma·to·top·i·cal\-pə̇kəl\ Etymology:somat- + top- + -ic or -ical : of, relating to, or mediating the orderly and specific relation between particular body regions (as a hand or the tongue) and corresponding motor areas of the brain < the somatotopic arrangement within the thalamus >