An instrument for making a series of radiographs; used, e.g., in cerebral angiography; an obsolete term for rapid film changes. ... Origin: series + G. Grapho, to write ... (05 Mar 2000) ... 
Type: Term Pronunciation: sē′rē-ō-graf Definitions: 1. An instrument for making a series of radiographs; used, in cerebral angiography; an obsolete term for rapid film changer.