| exploring electrode | An electrode placed on or near an excitable tissue; in unipolar electrocardiography, the electrode is placed on the chest in the region of the heart and paired with an indifferent electrode. (05 Mar 2000) |
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| exploring needle | A strong needle with a longitudinal groove, which is thrust into a tumour or cavity to determine the presence of fluid, the latter escaping externally along the groove. (05 Mar 2000) |
| exploring e. |
in electrodiagnosis, the electrode, usually small, placed nearest to the site of the bioelectric activity being recorded; it determines the potential in only that localized area.
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