Definition of "midstage"

midstage

noun
plural midstages
1. An intermediate stage, between beginning and completion
adjective
not comparable
1. At or in an intermediate stage, between beginning and completion
  Quotations
  Results of a midstage clinical trial are expected to be presented this week […] .
  2007 June 11, Andrew Pollack, “Antihistamine Shows Promise in Treating Alzheimer’s”, in New York Times‎