NANO-


Meaning of NANO- in English

nano- /nænəʊ $ -oʊ/ BrE AmE prefix [in nouns]

[ Language: Greek ; Origin: nanos 'dwarf' ]

one ↑ billion th part of a unit:

nanometre (=a billionth of a metre)

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.