Word.ws English Dictionary

N99

N99 noun: n99 standard.

Noun

N99 (countable and uncountable, plural N99s)

  1. (uncountable) N99 standard
  2. (countable) N99 filter

Forms of N99

pluralN99s

Origin of N99

From Initialism of Not resistant to oil particles with 99% filtration efficiency in NIOSH air filtration ratings.

Questions about N99

What does N99 mean?
N99 means n99 standard.
What part of speech is N99?
N99 is a noun.
What is the plural of N99?
The plural of N99 is N99s.

Words near N99 in the dictionary

  1. N64s
  2. N7 Day
  3. N9
  4. N95
  5. N95s
  6. N99
  7. N99s
  8. na
  9. na na na na boo boo
  10. na na na na na na
  11. na'theless

Source and license

Adapted from Wiktionary: N99 (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “N99.” Word.ws, https://word.ws/n99. Based on Wiktionary, CC BY-SA 4.0.