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