Meaning of ATTO- in English

ATTO-

transcription, транскрипция: [ ˈa-(ˌ)tō ]

combining form

Etymology: International Scientific Vocabulary, from Danish or Norwegian atten eighteen, from Old Norse āttjān; akin to Old English eahtatīene eighteen

: one quintillionth (10 -18 ) part of

atto gram

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.