IPA: /ˈhɛliəˌɡræf/
KK: /ˈhɛliəˌgræf/
To send a message using a device that reflects sunlight, typically for communication over long distances.
The soldiers used a heliograph to communicate with each other across the valley.
Past: heliographed
Past Participle: heliographed
A tool used to send messages or take pictures using sunlight.
The scientist used a heliograph to communicate with his team from a distance.
To send a message using a device that reflects sunlight, typically for long-distance communication.
The military used a heliograph to send signals across the desert.
Past: heliographed
Past Participle: heliographed
Heliograph → It is formed from "helios" (meaning sun) and "grapho" (meaning to write or draw). The word describes a device that uses sunlight to send messages by reflecting light in coded signals.
Think of 'helios' meaning sun and 'grapho' meaning to write — a heliograph is a device that writes messages using sunlight.