Definition of first principles noun from the Oxford Advanced Learner's Dictionary


first principles

BrE BrE//ˌfɜːst ˈprɪnsəplz//
; NAmE NAmE//ˌfɜːrst ˈprɪnsəplz//
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the basic ideas on which a theory, system or method is based I think we should go back to first principles.
See the Oxford Advanced American Dictionary entry: first principles