| supra-esophageal | <botany> Situated above, or on the dorsal side of, the oesophagus; as, the supra-esophageal ganglion of Crustacea. Alternative forms: supra-oesophagal, and supra-oesophageal. Source: Websters Dictionary (01 Mar 1998) |
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| esophageal | <anatomy> Pertaining to the oesophagus. Alternative forms: sophageal. (01 Mar 1998) |
| scalar electrocardiogram | Electrocardiographic lead output that can be displayed on one plane of the body in contradistinction to vector electrocardiogram in which the display is on two or more planes. (05 Mar 2000) |
| electrocardiogram | <cardiology, investigation> An recording of the electrical activity of the heart on a moving strip of paper. The electrocardiogram detects and records the electrical potential of the heart during contraction. Acronym: ECG (13 Nov 1997) |
| unipolar electrocardiogram | An electrocardiogram taken with the exploring electrode placed on the chest overlying the heart or upon a single limb, the indifferent ("zero" potential) electrode being the central terminal. (05 Mar 2000) |