astrograph

noun
as·​tro·​graph | \ ˈastrōˌgraf \
plural -s

Definition of astrograph

1 : a photographic telescope designed for use in mapping the heavens
2 : a now little used navigational instrument for projecting star-altitude curves from film directly onto a Mercator chart of proper scale

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for astrograph

International Scientific Vocabulary astr- + -graph

Keep scrolling for more

Learn More About astrograph

Dictionary Entries Near astrograph

astrogony

astrograph

astrographic

See More Nearby Entries 

Statistics for astrograph

Cite this Entry

“Astrograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/astrograph. Accessed 27 Oct. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Spell It

Can you spell these 10 commonly misspelled words?

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!