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English definition of “preliminary”

preliminary

adjective [before noun]     /prɪˈlɪm.ɪ.nər.i/ US  /-ə.ner-/
C1 coming before a more important action or event, especially introducing or preparing for it: Preliminary results show that the vaccine is effective, but this has to be confirmed by further medical trials. We've decided to change the design based on our preliminary findings.Preceding and introducing
(Definition of preliminary adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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