heliograph

noun
he·​lio·​graph | \ ˈhē-lē-ō-ˌgraf How to pronounce heliograph (audio) \

Definition of heliograph

: an apparatus for telegraphing by means of the sun's rays flashed from a mirror

Other Words from heliograph

heliograph transitive verb

First Known Use of heliograph

1877, in the meaning defined above

History and Etymology for heliograph

International Scientific Vocabulary

Keep scrolling for more

Learn More about heliograph

Time Traveler for heliograph

Time Traveler

The first known use of heliograph was in 1877

See more words from the same year

Statistics for heliograph

Cite this Entry

“Heliograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heliograph. Accessed 22 Sep. 2020.

More from Merriam-Webster on heliograph

Britannica.com: Encyclopedia article about heliograph

Comments on heliograph

What made you want to look up heliograph? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!