| HEA | electro-acoustic transducer for converting electric signals into sounds |
|---|---|
| HEA | a protective helmet for the head |
| HEA | the band that is the part of a bridle that fits around a horse's head |
| HEA | the front bowling pin in the triangular arrangement of ten pins |
| HEA | the military installation from which a commander performs the functions of command |
| HEA | the office that serves as the administrative center of an enterprise |
| HEA | a military unit consisting of a commander and the headquarters staff |
| HEA | military staff stationed at headquarters |
| HEA | a waterway that feeds water to a mill or water wheel or turbine |
| HEA | a rest for the head |
| HEA | a cushion attached to the top of the back of an automobile's seat to prevent whiplash |
| HEA | the capacity of a system to reproduce loud sounds without distortion |