helio
/ˈhiːlioʊ/
noun
- A device that uses mirrors to reflect sunlight, often used for signaling or communication.
- The explorer used a helio to signal for help across the desert.
- During the war, soldiers used a helio to send messages over long distances.
- The scout flashed the helio to alert the base camp of their location.
- Short for heliograph or heliotrope, or used as a prefix meaning 'sun'.
- The word 'heliocentric' starts with the prefix helio-, meaning sun.
- In astronomy class, we learned that helio- refers to the sun.
- The plant called heliotrope gets its name from the Greek helio, meaning sun.
Synonyms