Atto- Definition

atō
prefix
One quintillionth (10−18 ).
Attotesla.
American Heritage

In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10−18. Symbol: a.

Wiktionary
affix
One quintillionth part of; the factor 10-18
Attosecond.
Webster's New World

Origin of Atto-

  • From Danish or Norwegian atten eighteen from Old Norse āttjān oktō(u) in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Danish atten (“eighteen”).

    From Wiktionary

Find Similar Words

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Words Starting With

AATATT

Words Ending With

OTOTTO

Unscrambles

atto-

Words Starting With A and Ending With -

Starts With A & Ends With OStarts With AT & Ends With OStarts With A & Ends With TO

Word Length

4 Letter Words4 Letter Words Starting With A4 Letter Words Ending With O