NANOSECOND
Meaning of NANOSECOND in English
nan ‧ o ‧ sec ‧ ond /ˈnænəʊˌsekənd $ -noʊ-/ BrE AmE noun [countable]
a unit for measuring time. There are a ↑ billion nanoseconds in a second.
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012