| qr | quadriradial; quantity is correct [Lat. quantum rectum]; quarter |
|---|---|
| qs | as much as will suffice [Lat. quantum sufficit]; sufficient quantity [Lat. quantum satis] |
| qt | quantity; quart; quiet |
| quant | quantity, quantitative |
| RQ | recovery quotient; [Hazardous Substance] Reportable Quantities [List]; reportable quantity; respirat... |