di·​gam·​ma | \ dīˈgamə, ˈdīˌg- \

Definition of digamma

1 : a letter of the original Greek alphabet representing a sound approximately that of English w which early fell into disuse except in writing the western dialects and in numerical notation where it represented the number 6

called also vau

symbol F, ϝ
2 : the sound represented by the letter ϝ

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 digamma

Latin, from Greek, from di- + gamma; from its resemblance to two capital gammas placed on top of each other

Keep scrolling for more

Learn More about digamma

Statistics for digamma

Cite this Entry

“Digamma.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/digamma. Accessed 7 December 2019.

Comments on digamma

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


the study of flags

Get Word of the Day daily email!

Test Your Vocabulary

Semantic Drift Quiz

  • a twisty river
  • Which of the following was once a synonym for fun?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

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!