The crossword solution for the term PARTICULATE is COARSE, which is a 6-letter word. Particulate matter, also known as particulate pollution, is a type of air pollutant that consists of solid particles and liquid droplets found in the air. It can be made up of a variety of components, including dust, smoke, soot, and aerosols. Particulate matter can have serious health effects, as it can be inhaled and cause respiratory problems. COARSE particulate matter is larger than 2.5 micrometers in diameter and can include dust, dirt, and pollen.