Noun
N99; Ellipsis of NIOSH N99.
(uncountable) N99 standard
(countable) N99 filter
Source: en.wiktionary.orgRate, such as 95% partition, still 99%, or 100% (actually 99.97%) and divide the mask into N95, N99, N100, R95, P95, P100 and so on. Source: Internet
The Nigerian Stock Exchange (NSE) resumed trading on Monday with a growth of N99 billion following gains by some blue chips. Source: Internet