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English definition of “extensive”

extensive

adjective uk   /ɪkˈsten.sɪv/ us  
B2 covering a large area; having a great range: a school with extensive grounds extensive repairs to the motorway Her knowledge of music is extensive (= she knows a lot about music). The wedding received extensive coverage in the newspapers (= it was written about a lot).
extensively
adverb uk   /-li/ us  
The house was extensively rebuilt (= a large part of it was rebuilt ) after the fire. The side effects of the new drug are being extensively researched (= are being studied in detail).
(Definition of extensive from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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