plural of tail number

plural of winding number

(mathematics) A number line that has one endpoint (typically at zero)

(aviation, travel) A callsign assigned to a commercial flight for the purposes of reservation and ticketing, typically consisting of a 2 character airline code and a 1 to 4 digit number to indicate a particular service.

plural of covering number

(library science) An alphanumeric code used for efficiently sorting names, etc. into alphabetical order.

plural of Cutter number

present participle of number close

plural of f-number

plural of GLIDE number