plural case -ies
: a published report about a person, group, or situation that has been studied over time
a case study of prisoners
also
: a situation in real life that can be looked at or studied to learn about something
The company's recent history is a case study in bad management.
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“Case study.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/case%20study. Accessed 21 Jun. 2026.
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