| ROAD | reversible obstructive airways disease |
|---|---|
| RTA | ray tracing algorithm; renal tubular acidosis; reverse transcriptase assay; road traffic accident |
| KA | alkaline phosphatase; kainic acid; keratoacanthoma; keto acid; ketoacidosis; King-Armstrong [unit] |
| KAU | King-Armstrong unit |
| KDS | Kaufman Developmental Scale; King-Denborough syndrome; Kocher-Debre-Semelaigne [syndrome]; Kupfer-De... |