-graph


-graph
1. Something written, as in monograph, radiograph. 2. The instrument for making a recording, as in kymograph. Cf.:-gram. [G. grapho, to write]

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suffix denoting
an instrument that records. Example: electrocardiograph (instrument recording heart activity).

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a word termination denoting an instrument for writing or recording; also, the record made by such an instrument.

Medical dictionary. 2011.