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.
Getting rashes under your arms can really be the pits, but while these rashes have a variety of causes, most aren't cause for alarm. An armpit is a dark, moist place that's a perfect breeding ground for bacteria and other microbes.n underarm rash isn't usually the result of poor hygiene -- in fact, a rash may occur as the result of a product you use to stay clean and odor-free.