yotta-

combining form

yot·ta-

: septillion (10²⁴)

yottabyte

Word History

Etymology

International Scientific Vocabulary, perhaps alteration of Italian otto eight; from the fact that 10²⁴ is the eighth power of 10³

Browse Nearby Words

Yosu

yotta-

yottabyte

See all Nearby Words

Cite this Entry

Style

“Yotta-.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/yotta-. Accessed 4 Mar. 2025.

Copy Citation

More from Merriam-Webster

Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.

Can you solve 4 words at once?

Can you solve 4 words at once?

Word of the Day

schadenfreude

Listen to the pronunciation of schadenfreude

See Definitions and Examples »

Get Word of the Day daily email!

Popular in Grammar & Usage

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

'Sneaked' or 'Snuck': Which is correct?

What's the difference between 'fascism' and 'socialism'?

More Commonly Misspelled Words

Words You Always Have to Look Up

Popular in Wordplay

9 Superb Owl Words

10 Words from Taylor Swift Songs (Merriam's Version)

8 Words with Fascinating Histories

8 Words for Lesser-Known Musical Instruments

Birds Say the Darndest Things

Popular Features

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

9 Superb Owl Words

10 Words from Taylor Swift Songs (Merriam's Version)