atto-


  1. a combining form that enters into compounds denoting a unit one-quintillionth (10−18) the size of the unit named by the stem.

Origin of atto-

1
<Danish or Norwegian att(en) eighteen + -o-

Words Nearby atto-

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How to use atto- in a sentence

British Dictionary definitions for atto-

atto-

prefix
  1. denoting 10 –18: attotesla Symbol: a

Origin of atto-

1
from Norwegian, Danish atten eighteen

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