What is atmospheric pressure? Md. Saifur Rahman The pressure exerted vertically by the weight of the atmosphere per unit area of the earth is called the atmospheric pressure of that area.You may likeDo I need car insurance?What is car insurance?How could I get cheaper car insurance?What is auto insurance?Why Adulterant food is the barrier to sound health?What are the producers?What are food preservatives?What is food chain?What is tertiary consumer?