Needing something as a necessary condition or demanding that something be done.
Requiring comes from the Latin 're-' meaning 'again' and 'quirere' meaning 'to seek.' It literally means 'to seek again,' evolving into 'to demand' or 'to need as essential.'
Different careers have wildly different requirements—a surgeon requires years of training, but a lottery winner requires only luck—and studying what jobs require has become a whole field called labor analysis.
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