trinationally

English

Etymology

trinational +‎ -ly

Adverb

trinationally (not comparable)

1. Of or in three nations.
   • 2015, Michael Napier, Tornado Over the Tigris: Recollections of a Fast Jet Pilot:

     The Tornado was designed and built jointly by the Italians, Germans and the British and some great intellect decided that since the aircraft was produced trinationally, it followed that the aircrews should also be trained trinationally.