United customers can look forward to the following functions in the app: 1  Book flights and manage their MileagePlus and OnePass accounts. 2  Check in. 3  Access mobile boarding passes with one touch.  Get flight status/ 1 updates. Follow United's Twitter feed for up-to-the-minute updates on the airline.  Interactive airport maps.
Supernatant Definition - The supernatant is the clear liquid that lies above the solid residue after centrifugation, precipitation, crystallization or... Supernatant Definition - The supernatant is the clear liquid that lies above the solid residue after centrifugation, precipitation, crystallization or...
Supernumerary is an adjective which means exceeding the usual number. When used as a noun, supernumerary means a temporary employee, additional society member, or extra manpower, usually in a function which has a temporary contract. In aeronautical context, a flight deck may contain a supernumerary seat. 2  This is a place for someone who doesn't have anything to do with the take off, flying, or landing of the aircraft. 3  Just a place for an extra body to observe.