Merriam-Webster Logo
SINCE 1828
dictionary
thesaurus
view recents

astrocompass

noun
Save Word
as·​tro·​compass
plural -s

Definition of astrocompass

: a device that by mechanically solving the astronomical triangle reveals the bearing of any recognized celestial body to a navigator and is used especially near the earth's magnetic pole where magnetic compasses are not reliable

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 astrocompass

astr- + compass

Keep scrolling for more

Learn More about astrocompass

Statistics for astrocompass

Cite this Entry

“Astrocompass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/astrocompass. Accessed 18 Apr. 2021.

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

Comments on astrocompass

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

Show Comments  Hide Comments 

WORD OF THE DAY

forfend

Listen to the pronunciation of forfend

See Definitions and Examples »

Test Your Vocabulary

The Exceptions Quiz III

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

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!

Words at Play
Ask the Editors
Word Games