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KN95

Today it means: An air particulate filtration standard originating in the People's Republic of China, which requires filtration of 95% of air particulates that are 0.3 microns and larger. Full definition →

Chinese KN95

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The story

Chinese · borrowed fromKN95
English todayKN95

Borrowed from Chinese KN95, from Mandarin 口罩 (Kǒuzhào) + English N95, from an initialism of Not resistant to oil particles with 95% filtration efficiency in NIOSH air filtration ratings.

Etymology from Wiktionary, CC BY-SA 4.0.