| HEL | having the sun as the center |
|---|---|
| HEL | the parallax of a celestial body using two points in the earth's orbit around the sun as the baseline |
| HEL | a message transmitted by means of the sun's rays |
| HEL | an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on |
| HEL | signal with a heliograph |
| HEL | an intaglio print produced by gravure |
| HEL | worship of the sun |
| HEL | the boundary marking the edge of the sun's influence |
| HEL | any of various South African herbs and subshrubs cultivated for long showy racemes of bright blue flowers with white eyes |
| HEL | any North American shrubby perennial herb of the genus Heliopsis having large yellow daisylike flowers |
| HEL | (Greek mythology) ancient god of the sun |
| HEL | the region inside the heliopause containing the sun and solar system |