| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
|---|---|
| NAF | nafcillin; National Amputation Foundation; National Ataxia Foundation; net acid flux |
| NF | nafcillin; National Formulary; nephritic factor; neurofibromatosis; neurofilament; neutral fraction;... |
| DOSS | distal over-shoulder strap; dioctyl sodium sulfosuccinate; docusate sodium |
| DSS | dengue shock syndrome; dioctyl sodium sulfosuccinate; Disability Status Scale; discrete subaortic st... |