PM2.5
Hello, you have come here looking for the meaning of the word PM2.5. In DICTIOUS you will not only get to know all the dictionary meanings for the word PM2.5, but we will also tell you about its etymology, its characteristics and you will know how to say PM2.5 in singular and plural. Everything you need to know about the word PM2.5 you have here. The definition of the word PM2.5 will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofPM2.5, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.
English
Proper noun
PM2.5
- Initialism of particulate matter 2.5, a pollution measurement of particles with a maximum diameter of 2.5 µm.
- 2019 June 20, David Stanway, “China coal hub Shanxi slams seven cities for pollution spike in 2019”, in Sherry Jacob-Phillips, editor, Reuters, archived from the original on 2019-06-21, Environment:
- All seven cities saw an increase in air pollution during January-May. Readings assessed showed an average concentration of hazardous airborne particles - known as PM2.5 - up by as much as 14.8% in Taiyuan, the provincial capital, and by 16.3% in Shuozhou. […]
According to the latest data, average rates of PM2.5 in 337 cities nationwide stood at 44 micrograms per cubic meter in the first five months of the year, unchanged from 2018, with 118 cities reaching the national standard of 35 micrograms or below.