Atto definition. Synonym Discussion of Fraud. Attosecond. Définition, exemples et prononciation de atto- : Préfixe du système international (symbole a) qui d… atto Definition, Meaning & Synonyms Definition A metric prefix used in the International System of Units (SI) that represents a factor of 10 -18. atto- a combining form denoting one-quintillionth (10 −18) the size of the unit denoted by the second element of the compound: attosecond. In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10 −18. From Danish atten (“eighteen”). Atto- is a prefix in the metric system denoting a factor of 10−18 or 0. The meaning of ATTO- is one quintillionth (10—18) part of. Atto synonyms, Atto pronunciation, Atto translation, English dictionary definition of Atto. One quintillionth : attotesla. Jan 12, 2026 · atto- In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10 −18 (short scale quintillionth or long scale trillionth). attosecond - one quintillionth of a second; one thousandth of a femtosecond time unit, unit of time - a unit for measuring time periods femtosecond ATTO- definition: denoting 10 –18 | Meaning, pronunciation, translations and examples in American English Illustrated definition of Atto-: A prefix meaning one-quintillionth (1/1,000,000,000,000,000,000 or 10-18) The same as multiplying by atto-, comb. Atto- definition: One quintillionth (10<sup>−18</sup> ). atto- in American English combining form a combining form that enters into compounds denoting a unit one-quintillionth (10 −18) the size of the unit named by the stem “Atto” is the scientific notation prefix that represents 10-18, which is a decimal point followed by 17 zeroes and a 1. The unit multiple was adopted at the 12th Conférence Générale des Poids et Mesures in Resolution 8. . American Heritage Define Atto. 1 day ago · Direct comparison of Geely EX5 vs BYD Atto 3 2026 model year: WLTP range, EU certification status, charging speed, warranty, pricing, and real-world readiness—based on verified test data and regulatory filings. English definitions powered by Oxford Languages atto- volume_up UK /ˈatəʊ/ combining form (used in units of measurement) denoting a factor of 10−18 attowatt Definition of atto- combining form in Oxford Advanced Learner's Dictionary. atto- synonyms, atto- pronunciation, atto- translation, English dictionary definition of atto-. form meanings, etymology, pronunciation and more in the Oxford English Dictionary Sep 2, 2025 · atto (feminine atta, masculine plural atti, feminine plural atte) fit or capable (for a specified task) synonyms Synonyms: idoneo, appropriato, acconcio, adeguato The meaning of FRAUD is deceit, trickery; specifically : an act, expression, omission, or concealment calculated to induce another to part with something of value or to surrender a legal right. Find similar words to atto- using the buttons below. How to use atto- in a sentence. Origin and history of atto- atto- word-forming element meaning "one quintillionth," 1962, from Danish atten "eighteen" (a quintillion is 10 to the 18th power), related to Old English eahtatene (see eighteen). Define atto-. How to use fraud in a sentence. Symbol: a. pref. Definition of atto- combining form in Oxford Advanced Learner's Dictionary. Noun 1. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. 000000000000000001. wjy pel wxq llt orc oit pgt clv dfs azy rss hkl shb erg bcf