Definitions for "PM-10"
The regulatory identifier for all types of airborne particulate matter with a diameter of less than 10 microns. Smaller particles are more likely to cause adverse health effects because of their ability to penetrate the body's natural defenses.
A major air pollutant consisting of tiny solid or liquid particles of soot, dust, smoke, fumes, and mists. The size of the particles (10 microns or smaller, about 0.0004 inches or less) allows them to easily enter the air sacs deep in the lungs where they may be deposited to result in adverse health effects. PM-10 also causes visibility reduction and is a criteria air pollutant.
Particulate matter less than 10 microns (micrometers) in diameter