In Research:
* Clinical Trial: A research study in humans that aims to evaluate the safety and efficacy of a new drug, treatment, or medical device.
* Experimental Trial: A controlled experiment designed to test a hypothesis. This involves manipulating an independent variable and measuring the effect on a dependent variable.
* Field Trial: An experiment conducted in a natural setting, like a farm or forest, to study the effects of a treatment or intervention in real-world conditions.
In Law:
* Trial: A formal legal process in which evidence is presented to a judge or jury to determine the guilt or innocence of a defendant in a criminal case or the liability of a defendant in a civil case.
In Engineering:
* Trial and Error: A method of problem-solving that involves repeatedly testing different solutions until a successful one is found.
In General:
* Trial: A test or experiment to determine the effectiveness of something.
The specific definition of "trial" depends on the context in which it is used. It's crucial to consider the context and the specific discipline to understand the precise meaning of the word.