Main Entry: Graf·en·berg spot Pronunciation: 'graf-&n-b&rg-, 'gräf-, 'gref- Function: noun :G-SPOT Gräfáenáberg/'gref-&n-"berk,/Ernst(1881–1957) American (German-born)gynecologist. Gräfenberg is credited with the introduction, in 1929, of one of the first intrauterine contraceptive devices. Consisting of a flexible ring of silver wire, it became known as theGräfenberg ring. He first described a sensitive area of the anterior wall of the vagina in 1944. This area, now called the Grafenberg spot or G-spot, was further described in an article on therole of the urethra in female orgasm in the International Journal of Sexology in 1950.