IPA: /ˈhɛliəˌɡræf/
KK: /ˈhɛliəˌgræf/
intransitive verb
Definition: To send a message using a device that reflects sunlight, typically for communication over long distances.
Example: The soldiers used a heliograph to communicate with each other across the valley.
noun
Definition: A tool used to send messages or take pictures using sunlight.
Example: The scientist used a heliograph to communicate with his team from a distance.
transitive verb
Definition: To send a message using a device that reflects sunlight, typically for long-distance communication.
Example: The military used a heliograph to send signals across the desert.