| VC | color vision; variance cardiography; vascular changes; vasoconstriction; vena cava; venereal case; v... |
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| VF | left leg [electrode]; ventricular fibrillation; ventricular fluid; ventricular flutter; visual field... |
| VR | right arm [electrode]; valve replacement; variable ratio; vascular resistance; venous reflux; venous... |
| VVI | ventricular inhibited [pacemaker]; vocal velocity index |
| functional vocal fatigue | Difficult or abnormal voice production, the enunciation being too high, too loud, or too hard. Synonym: functional vocal fatigue. Origin: phon-+ G. Astheneia, weakness (05 Mar 2000) |
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| local tic | A tic of very limited extent, as the winking of an eye or a twitch of a finger. (05 Mar 2000) |