variants: or dot-dash \ ˈ⸗¦⸗ \

Definition of dot-and-dash

 (Entry 1 of 2)

1 : formed of or as if of alternating dots and dashes run a dot-and-dash line across the sheet
2 : consisting of or using an alphabet made up of dots and dashes as signals for communicating secret conversations by means of long and short muscular movements in the Morse dot-and-dash system


transitive verb
\ " \
variants: or dot-dash \ " \

Definition of dot-and-dash (Entry 2 of 2)

1 : to mark with a succession of dots and dashes
2 : to convey by means of a dot-and-dash system

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!

Learn More about dot-and-dash

Statistics for dot-and-dash

Cite this Entry

“Dot-and-dash.” Dictionary, Merriam-Webster, Accessed 22 Feb. 2020.

Comments on dot-and-dash

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


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

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!