Entry 1 sense Webster, 1913 Gynecology /(jĭn`ē̇*kŏl"ō̇*jy̆ [or] gī`nē̇-)/ · Gyn·e·col·o·gy · IPA /ˌɡaɪnəˈkɑləd͡ʒi/ 01 n. The science which treats of the structure and diseases of women. 1. The science which treats of the structure and diseases of women.