| s | Greek lower case letter sigma; conductivity; cross section; millisecond; molecular type or bond; pop... |
|---|---|
| VB | vaginal bulb; valence bond; venous blood; ventrobasal; Veronal buffer; vertebrobasilar; viable birth... |
| TAR | Thrombocytopenia-Absent Radius |
| ESR | Einstein stoke radius; electric skin resistance; electron spin resonance; equipment service report; ... |
| IR | drop of voltage across a resistor produced by a current; ileal resection; immune response; immunizat... |