Etymology
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cardiology (n.)

"the study of the heart," 1847, from cardio- + -logy. Cardiologist attested from 1885.

updated on October 09, 2017

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Definitions of cardiology from WordNet

cardiology (n.)
the branch of medicine dealing with the heart and its diseases;
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.