# reliability

Pronunciation: US say "ri-ly-uh-BIL-uh-tee" /ɹɪˌlaɪəˈbɪləti/; UK say "ri-ly-uh-BIL-i-tee" /ɹɪˌlaɪəˈbɪlɪti/

## Noun

1. The quality of being dependable, trustworthy, and consistent in performance or behavior.
   - Simple: The quality of being someone or something that you can trust and depend on.
   - _The reliability of the new engine impressed every reviewer._
   - _Voters questioned the candidate's reliability after several broken promises._
2. The measurable length of time a device or system operates before it fails.
   - Simple: How long a machine keeps working before it breaks down.
   - _The reliability of the new turbine exceeded the manufacturer's projections._
   - _Field data showed the sensor's reliability dropping sharply in extreme cold._
3. The degree to which a test or measurement gives the same result when repeated under the same conditions.
   - Simple: How much a test gives the same answer each time you use it.
   - _The questionnaire's reliability was confirmed when repeated administrations produced nearly identical scores._
   - _Researchers reported low reliability for the rating scale across different observers._

## Origin

Formed from the adjective "reliable" combined with the suffix "-ity".

Source: DictionaryAI, https://dictionaryai.com/define/reliability (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).