Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† physĭŏlŏgĭa, ae, f., = φυσιολογία, knowledge of nature, natural philosophy, physiology, Cic. N. D. 1, 8, 20: naturae ratio, quam physiologiam Graeci appellant, id. Div. 1, 41, 90; 2, 16, 37.