| IRIS | integrated risk information system; interleukin regulation of immune system; International Research ... |
|---|---|
| ISIS | image selected in vivo spectroscopy; imaging science and information system; information system-imag... |
| LIS | laboratory information system; lateral intercellular space; left intercostal space; library informat... |
| MIS | management information system; medical information service; meiosis-inducing substance; minimally in... |
| USP DI | United States Pharmacopeial convention Dispensing Information |