English

Noun

trialist ‎(plural trialists)

1. An advocate of trialism, especially with reference to the proposed creation of a state comprising Austria, Hungary, and a Slavic region.

Adjective

trialist ‎(not comparable)

1. Involving three elements; especially, pertaining to a potential state comprising Austria, Hungary, and a Slavic region.
   • 2012, Christopher Clark, The Sleepwalkers, Penguin 2013, p. 84:

     Only if Bosnia-Herzegovina were fully annexed to the empire would it be possible eventually to incorporate it into the structure of a reformed trialist monarchy.

Etymology 2

From trial ‎(“test, experiment”) +‎ -ist.

Noun

trialist ‎(plural trialists)

1. A person who takes part in a trial (of a drug etc.)