Definition of "developmental"

developmental

/dɪˌvɛləpˈmɛntəl/

adjective
not comparable
1. Related to development.
noun
plural developmentals
1. A trainee flight controller.
  Quotations
  Mr. Paguaga said: “We do have a pipeline of people that are developmentals coming into the building.
  2007 May 12, Matthew L. Wald, “As Kennedy Traffic Rises, So Do Worries About Delays and Heavier Runway Use”, in New York Times‎