Link Centre Dictionary

heliograph

he·liog·raph

US/ˈhiː.li.əˌɡɹæf/ uncommon dated obsolete
noun (1) verb (1)

noun

1.

an apparatus for sending telegraphic messages by using a mirror to turn the sun''s rays off and on

verb

1.

signal by means of a mirror and the using the sun''s rays

Origin

From helio- + -graph.

Related words

Broader terms

WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.