| HAL | Scottish geneticist (son of John Haldane) who contributed to the development of population genetics |
|---|---|
| HAL | ground snakes |
| HAL | in some classifications placed in genus Haldea |
| HAL | tranquilizer (trade name Haldol) used to treat some psychotic disorders and Tourette's syndrome |
| HAL | prolific United States writer (1822-1909) |
| HAL | United States astronomer who discovered that sunspots are associated with strong magnetic fields (1868-1938) |
| HAL | American Revolutionary soldier hanged as a spy by the British |
| HAL | draw slowly or heavily |
| HAL | to cause to do through pressure or necessity, by physical, moral or intellectual means :"She forced him to take a job in the city" |
| HAL | exhibiting or restored to vigorous good health |
| HAL | a national park in Hawaii including a dormant volcano |
| HAL | a state of robust good health |