proprioceptorPronunciation: /ˈprəʊprɪə(ʊ)sɛptə/Definition of proprioceptor noun Physiology a sensory receptor which receives stimuli from within the body, especially one that responds to position and movement. Origin: early 20th century: from Latin proprius 'own' + receptorproprioceptor in other Oxford dictionaries Definition of proprioceptor in the US English dictionary