R99
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Translingual[edit]
Etymology[edit]
Noun[edit]
R99
- A filtration type that efficiently filters out 99% of airborne particulates of 0.3 microns (“μm”) (and all larger particles) and is somewhat resistant to oil.
- A filter implementing the R99 standard.
Coordinate terms[edit]
Related terms[edit]
English[edit]
Etymology[edit]
From Initialism of Resistant to oil particles with 99% filtration efficiency in NIOSH air filtration ratings.
Noun[edit]
R99 (countable and uncountable, plural R99s)
- R99; Ellipsis of NIOSH R99.
- (uncountable) R99 standard
- (countable) R99 filter
Coordinate terms[edit]
Related terms[edit]
Categories:
- Translingual terms borrowed from English
- Translingual terms derived from English
- Translingual lemmas
- Translingual nouns
- Translingual terms spelled with numbers
- English initialisms
- English lemmas
- English nouns
- English uncountable nouns
- English countable nouns
- English words without vowels
- English terms spelled with numbers
- English ellipses