trial

noun

1. the act of testing something

   noun.act

   Examples

   In the experimental trials the amount of carbon was measured separately.

   He called each flip of the coin a new trial.

   Synonyms run test

   Source: WordNet 3.0

2. trying something to find out about it

   noun.cognition

   Examples

   A sample for ten days free trial.

   A trial of progesterone failed to relieve the pain.

   Synonyms test trial run tryout

   Source: WordNet 3.0

3. the act of undergoing testing

   noun.act

   Examples

   Candidates must compete in a trial of skill.

   Synonyms test

   Source: WordNet 3.0

4. (law) the determination of a person's innocence or guilt by due process of law

   noun.act

   Examples

   He had a fair trial and the jury found him guilty.

   Most of these complaints are settled before they go to trial.

   Source: WordNet 3.0

5. (sports) a preliminary competition to determine qualifications

   noun.event

   Examples

   The trials for the semifinals began yesterday.

   Source: WordNet 3.0

6. an annoying or frustrating or catastrophic event

   noun.event

   Examples

   His mother-in-law's visits were a great trial for him.

   Synonyms tribulation visitation

   Source: WordNet 3.0

7. The act of trying or testing in any manner.

   noun

   Source: webster1913