primogenitor n an ancestor in the direct line Usage(s) This tiny, nameless primogenitor of all living matter may have used some primitive kind of photosynthesis to reproduce itself. Synonym(s) progenitor
News & Articles primogenitor Sorry, U.S. Open: Tennis Is Way Rowdier 16th-Century Style Real tennis,the primogenitor of modern tennis, was a more complicated game with a shadier reputation—and a few staunch devotees want to engineer its comeback. Sept. 9, 2013 - The Atlantic