demonstrational

English

Etymology

demonstration +‎ -al

Adjective

demonstrational (not comparable)

1. Involving, or relating to, demonstration.
   • 1939, American Society for Engineering Education, Proceedings, volume 47, page 296:

     In order to reduce the time spent in individual experimental work there has been a trend toward a demonstrational lecture procedure by means of which the student is given an opportunity to observe natural occurrences […]