Tilraunin

Tilraunin is the definite singular form of the Icelandic noun tilraun, meaning "an experiment" or "a test." It is used to refer to a specific experiment that has been mentioned or is otherwise known in context. The general term tilraun covers any attempt to test a hypothesis, evaluate a method, or gauge performance, with tilraunin serving as the definite form for a particular instance.

In scientific writing, tilraunin describes the experimental procedure and its results, while in everyday language the word can refer to trials of new technology, policy pilots, or practical demonstrations. The plural form tilraunir denotes multiple experiments or trials; possessives and definite forms adjust with standard Icelandic grammar.

Etymology: tilraun is native Icelandic, and tilraunin is its definite form. The word is widely used in Icelandic textbooks, newspapers, and research reports, and appears across disciplines from natural sciences to social sciences.

See also: tilraunir (plural), prófun (test), rannsókn (investigation).