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English definition of “expertise”

expertise

noun [U]     /ˌek.spɜːˈtiːz/ US  /-spɝː-/
a high level of knowledge or skill: We admired the expertise with which he prepared the meal. I have no expertise in sewing/sewing expertise. She has considerable expertise in French history.Skill, talent and ability
(Definition of expertise noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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