| JR | Jolly reaction; junctional rhythm |
|---|---|
| JRA | Juvenile Rheumatoid Arthritis; 연소기 류마토이드 관절염 = Juvenile Chronic Arthritis; 연소기 만성 관절염 Def; 15세 이하의 소아에서 6주이상 지속되는 관절염(= Still's Disease) |
| JRA | juvenile rheumatoid arthritis |
| JRC | CVT Joint Review Committee on Education in Cardiovascular Technology |
| JRC | DMS Joint Review Committee on Diagnostic Medical Sonography |
| JROM | joint range of motion |
| JRT | junctional recovery time |