prerequisite
US /ˌpriːˈrek.wə.zɪt/
UK /ˌpriːˈrek.wə.zɪt/
1.
a thing that is required as a prior condition for something else to happen or exist
:
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A good understanding of algebra is a prerequisite for this advanced math course.
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Experience in the field is a prerequisite for the job.
1.
required as a prior condition
:
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A high school diploma is prerequisite for college admission.
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The course has several prerequisite readings.