transcription, транскрипция: [ ˈzep-tə-ˌse-kənd, -kənt ]
noun
Date: 1994
: one sextillionth of a second
ZEPTOSECOND
Meaning of ZEPTOSECOND in English
Merriam-Webster's Collegiate English vocabulary. Энциклопедический словарь английского языка Merriam Webster. 2003