| RCD | relative cardiac dullness |
|---|---|
| SCD | scleroderma; service-connected disability; sickle-cell disease; spinocerebellar degeneration; subacu... |
| TCD | tapetochoroidal dystrophy; T-cell depletion; thermal conductivity detector; tissue culture dose; tra... |
| TDCO | thermodilution cardiac output [measurement] |
| UCO | ultrasonic cardiac output; urethral catheter out; urinary catheter out |