| UF | film unsharpness; ultrafiltrate; ultrafiltration; ultrafine; ultrasonic frequency; universal feeder;... |
|---|---|
| UFD | ultrasonic flow detector; unilateral facet dislocation |
| UL | ultrasonic; Underwriters Laboratories; undifferentiated lymphoma; upper limb; upper limit; upper lob... |
| URS | ultrasonic renal scanning |
| US | screen unsharpness ultrasonic, ultrasound; ultrasonography; unconditioned stimulus; unique sequence;... |