What it means
The ending of words for machines that record something, and sometimes for the record itself. An electrocardiograph is the machine that records the heart's electrical activity. Two close relatives share the root graph/o (to write or record): -gram names the record, as in electrocardiogramih-lek-troh-KAR-dee-oh-gramA test that records the heart's electrical activity as waves on paper or a screen.electr/o electricitycardi/o heart-gram recordFull entry and mammogram, and -graphy names the process of recording, as in angiography.
Related terms
electrocardiogram
A test that records the heart's electrical activity as waves on paper or a screen.
-gram
A word ending that means a record or picture made by a test.
-graphy
A word ending that means the process of recording or making an image.