sar·​os | \ ˈsa(a)ˌräs\
plural -es

Definition of saros

: a lunar cycle of 6585.32 days at the end of which the centers of sun and moon return so nearly to their relative positions at the beginning that all the eclipses of the period recur approximately as before though in longitudes about 120 degrees west of the regions where they were visible in the saros immediately preceding

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 saros

Greek, from Akkadian shāru cycle of 3600 years

Keep scrolling for more

Learn More about saros

Statistics for saros

Look-up Popularity

Comments on saros

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


to express emotion in a dramatic way

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Dictionary Devil

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


Love words? Need even more definitions?

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