| x-rays | roentgen rays |
|---|---|
| GR | gamma-rays; gastric resection; general research; generalized rash; glucocorticoid receptor; glutathi... |
| HED | hereditary ectodermal dysplasia; hydrotropic electron-donor; hypohidrotic ectodermal dysplasia; unit... |
| GBD | gallbladder disease; gender behavior disorder; glass blower's disease; granulomatous bowel disease |
| GDW | glass-distilled water |