| FWPCA | Federal Water Pollution Control Administration |
|---|---|
| HC | hair cell; hairy cell; handicapped; head circumference; head compression; health care; healthy contr... |
| HCT | health check test; hematocrit; historic control trial; homocytotrophic; human calcitonin; hydrochlor... |
| IC | icteric, icterus; immune complex; immunoconjugate; immunocytochemistry; immunocytotoxicity; impedanc... |
| ICD | I-cell disease; immune complex disease; implantable cardioverter defibrillator; impulse-control diso... |