atto-

American  

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

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atto- British  

prefix

1.  a.  denoting 10 ^–18

   attotesla

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Etymology

Origin of atto-

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

Example Sentences

In October, Adrian Blackburn and Kirsty Blackburn from Yorkshire, England, sold their BMW and Fiat and bought two BYDs: the Sealion 7 and the smaller Atto 2.

From The Wall Street Journal

Official data on sales were not available, but Chinese automaker BYD’s Atto 3 and Indian maker Tata’s Nexon appear to dominate sales of electric passenger sedans.

From Seattle Times

For the equivalent of about $50,000, the Atto 3 SUV came with “all these goodies” like a 360-degree dash cam, two years of free charging and an extra set of winter tires.

From Seattle Times

“Atto” is the scientific notation prefix that represents 10-18, which is a decimal point followed by 17 zeroes and a 1.

From Salon

The Chinese automaker sold more than 26% of all cars in Southeast Asia's small but fast-growing EV market in the second quarter of 2023 and its Atto 3 model, priced starting at $30,000 in Thailand, was the regional bestseller, according to Counterpoint.

From Reuters