Revenue passenger miles. Revenue passenger miles (or RPM) measures demand for air transport. Itâs calculated as the number of revenue passengers multiplied by the total distance traveled. Itâs also called airline âtraffic.â. An increase in RPM is positive for an airline company. It means that more passengers are using their service.
Definition. An armpit lump is a swelling or bump under the arm. A lump in the armpit can have many causes. These include swollen lymph nodes, infections, or cysts.
4. Antiperspirants. Regular use of antiperspirants can sometimes cause lumps under your armpits. This usually happens when you're allergic to or your body reacts to one of the chemicals used in your brand of antiperspirant. Treatment: The simple treatment is to change the brand and see how well the other works. If you get another pea-sized lump in armpit, you should stop using any type of antiperspirant at all.