What's Trending Now
More Trending Words
astrocompass
noun
as·tro·compass
Definition of astrocompass
-s
: 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
Explore M-W
There's more!
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!
Origin and Etymology of astrocompass
astr- + compass
Seen and Heard
What made you want to look up astrocompass? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!