What does PM stand for?

Post Meridiem

The 2-by-12-hour count is the double counting of the full day divided into 24 equally long equinox hours, i.e. the day and night together, with the help of the so-called small clock.

Particulate Matter

PM stands for "Particulate Matter," a term widely used in weather and environmental science. Particulate matter refers to tiny solid or liquid particles suspended in the air, such as dust, smoke, soot, and droplets. These particles can come from natural sources like pollen or from human activities like car emissions, factories, and burning wood. Weather reports and air quality indexes often mention PM levels to inform the public about air pollution and possible health risks. Related search terms include "air pollution," "fine particles," and "air quality."

Understanding PM is important because high levels can make the air look hazy and cause health problems, especially for people with asthma or other breathing issues. Weather services often measure different sizes of particulate matter, like PM10 and PM2.5, to show how much pollution is present. Tracking PM helps communities prepare for days when the air quality is poor and take action to reduce exposure. People interested in weather updates, environmental safety, or public health often look for information about PM to stay informed and safe.

Pilot Monitoring

Prime Minister

Project Management

The process of managing and planning a successful project from start to finish, which includes controlling, organizing, managing resources, people, budgets, etc. See project management.

Panama

Peritoneal Macrophages

Partial Hydatidiform Mole

Plan

A drawing prepared for use in building a ship. Chart covering a small area on a very large scale There is n distortion, relative distances and positions being maintained