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