somesthesia n the perception of tactual or proprioceptive or gut sensations he relied on somesthesia to warn him of pressure changes n the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs Synonym(s) somaesthesia somatesthesia somatic sensation somesthesis somaesthesis somataesthesis somatosensory system somatic sensory system somatic sense