Definition of pedant noun from the Oxford Advanced Learner's Dictionary

 

pedant

 noun
noun
BrE BrE//ˈpednt//
 
; NAmE NAmE//ˈpednt//
 
(disapproving)
 
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a person who is too concerned with small details or rules especially when learning or teaching A pedant will always insist that you ask for ‘fewer’ items rather than ‘less’. Word Origin late 16th cent.: from French pédant, from Italian pedante, perhaps from the first element of Latin paedogogus, from Greek paidagōgos, denoting a slave who accompanied a child to school (from pais, paid- ‘boy’ + agōgos ‘guide’).
See the Oxford Advanced American Dictionary entry: pedant