testing

The word “testing” means the process of checking whether something works correctly or meets a standard. In plain terms, the act of trying something out to check it works, or (as an adjective) something that really challenges you.

“Testing” is pronounced TEHS-tihng (/ˈtɛs.tɪŋ/ in IPA).

Here is “testing” used in a sentence: “The drug is currently in clinical testing.”

Depending on how it is used, “testing” can be a noun and an adjective.

“Testing” is a fairly common word in modern English.

“Testing” has 2 distinct senses listed in this dictionary. The most common is: the process of checking whether something works correctly or meets a standard.

Testing takes many forms depending on the field. In software, common types include unit, integration, performance, and user-acceptance testing. In manufacturing, products undergo safety and quality testing. Education uses standardized testing to measure learning, and medicine relies on diagnostic testing. All share the same goal: checking that something works or meets a standard.

Testing is the process of checking whether something works correctly and finding where it fails. Debugging is what comes next: locating the cause of a fault and fixing it. In short, testing reveals that a problem exists, while debugging removes it. Testing detects the fault, and debugging repairs it.

Testing catches faults before they reach users, saving money, time, and reputation. It confirms that a product, system, or process meets its intended standard and is safe to use. Whether for software, vehicles, or medicine, testing builds confidence, reduces risk, and helps prevent failures that could be costly or even dangerous.

Running a new app to check that every button works before release is testing. Other examples include a factory sampling products for defects, a lab analysing a blood sample, or a school setting an exam. Each case checks whether something performs correctly or reaches a required standard before it is relied upon.