| NDATUS | National Drug and Alcoholism Treatment Unit Survey |
|---|---|
| NDT | neurodevelopmental treatment; noise detection threshold; nondestructive test, nondestructive testing... |
| NOTB | National Ophthalmic Treatment Board |
| OPT | outpatient; outpatient treatment |
| OT | objective test; oblique talus; occlusion time; occupational therapist, occupational therapy; ocular ... |